./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_stateful-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_stateful-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro --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 8ecae2ca1de1e5b446d807037ed0cb2d4fc04c355acb35a6870f18f7e175f10e --- 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-8393723 [2022-11-18 19:31:20,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:31:20,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:31:20,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:31:20,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:31:20,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:31:20,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:31:20,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:31:20,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:31:20,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:31:20,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:31:20,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:31:20,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:31:20,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:31:20,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:31:20,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:31:20,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:31:20,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:31:20,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:31:20,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:31:20,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:31:20,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:31:20,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:31:20,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:31:20,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:31:20,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:31:20,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:31:20,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:31:20,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:31:20,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:31:20,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:31:20,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:31:20,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:31:20,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:31:20,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:31:20,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:31:20,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:31:20,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:31:20,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:31:20,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:31:20,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:31:20,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:31:20,299 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:31:20,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:31:20,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:31:20,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:31:20,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:31:20,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:31:20,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:31:20,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:31:20,302 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:31:20,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:31:20,304 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:31:20,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:31:20,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:31:20,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:31:20,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:31:20,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:31:20,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:31:20,305 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:31:20,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:31:20,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:31:20,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:31:20,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:31:20,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:31:20,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:31:20,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:20,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:31:20,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:31:20,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:31:20,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:31:20,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:31:20,309 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:31:20,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:31:20,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:31:20,310 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_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ecae2ca1de1e5b446d807037ed0cb2d4fc04c355acb35a6870f18f7e175f10e [2022-11-18 19:31:20,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:31:20,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:31:20,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:31:20,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:31:20,590 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:31:20,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/seq-pthread/cs_stateful-1.i [2022-11-18 19:31:20,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/data/677a863a0/474c8d01998d415a914717f7db14241c/FLAGffc68ffa4 [2022-11-18 19:31:21,204 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:31:21,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/sv-benchmarks/c/seq-pthread/cs_stateful-1.i [2022-11-18 19:31:21,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/data/677a863a0/474c8d01998d415a914717f7db14241c/FLAGffc68ffa4 [2022-11-18 19:31:21,515 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/data/677a863a0/474c8d01998d415a914717f7db14241c [2022-11-18 19:31:21,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:31:21,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:31:21,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:21,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:31:21,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:31:21,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:21" (1/1) ... [2022-11-18 19:31:21,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a406c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:21, skipping insertion in model container [2022-11-18 19:31:21,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:21" (1/1) ... [2022-11-18 19:31:21,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:31:21,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:31:21,885 WARN L234 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_d95353d6-4338-454d-ad81-2bce41ff7956/sv-benchmarks/c/seq-pthread/cs_stateful-1.i[23400,23413] [2022-11-18 19:31:22,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:22,046 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:31:22,088 WARN L234 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_d95353d6-4338-454d-ad81-2bce41ff7956/sv-benchmarks/c/seq-pthread/cs_stateful-1.i[23400,23413] [2022-11-18 19:31:22,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:22,181 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:31:22,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22 WrapperNode [2022-11-18 19:31:22,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:22,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:22,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:31:22,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:31:22,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,311 INFO L138 Inliner]: procedures = 144, calls = 231, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 563 [2022-11-18 19:31:22,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:22,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:31:22,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:31:22,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:31:22,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,360 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:31:22,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:31:22,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:31:22,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:31:22,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (1/1) ... [2022-11-18 19:31:22,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:22,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:22,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:22,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:31:22,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:31:22,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:31:22,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:31:22,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:31:22,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:31:22,479 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2022-11-18 19:31:22,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2022-11-18 19:31:22,481 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-11-18 19:31:22,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-11-18 19:31:22,482 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-11-18 19:31:22,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-11-18 19:31:22,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:31:22,483 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-11-18 19:31:22,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-11-18 19:31:22,483 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-11-18 19:31:22,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-11-18 19:31:22,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:31:22,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:31:22,484 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-11-18 19:31:22,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-11-18 19:31:22,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:31:22,485 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-11-18 19:31:22,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-11-18 19:31:22,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:31:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:31:22,770 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:31:22,772 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:31:23,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L746: SUMMARY for call __CS_cs(); srcloc: null [2022-11-18 19:31:23,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-11-18 19:31:23,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume !(0 != ~__CS_ret~0 % 256); [2022-11-18 19:31:23,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !(0 != ~__CS_ret~0 % 256); [2022-11-18 19:31:23,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-11-18 19:31:23,300 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !(0 != ~__CS_ret~0 % 256); [2022-11-18 19:31:23,300 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-11-18 19:31:25,716 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:31:25,724 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:31:25,725 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:31:25,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:25 BoogieIcfgContainer [2022-11-18 19:31:25,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:31:25,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:31:25,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:31:25,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:31:25,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:21" (1/3) ... [2022-11-18 19:31:25,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2968c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:25, skipping insertion in model container [2022-11-18 19:31:25,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:22" (2/3) ... [2022-11-18 19:31:25,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2968c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:25, skipping insertion in model container [2022-11-18 19:31:25,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:25" (3/3) ... [2022-11-18 19:31:25,736 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_stateful-1.i [2022-11-18 19:31:25,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:31:25,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:31:25,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:31:25,853 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;@4a4c785d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:31:25,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:31:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 119 states have (on average 1.504201680672269) internal successors, (179), 120 states have internal predecessors, (179), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-18 19:31:25,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:31:25,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:25,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:25,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:25,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1724368089, now seen corresponding path program 1 times [2022-11-18 19:31:25,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:25,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174008239] [2022-11-18 19:31:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:25,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:26,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:26,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174008239] [2022-11-18 19:31:26,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174008239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:26,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:26,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:26,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889308808] [2022-11-18 19:31:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:26,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:31:26,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:31:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:31:26,949 INFO L87 Difference]: Start difference. First operand has 170 states, 119 states have (on average 1.504201680672269) internal successors, (179), 120 states have internal predecessors, (179), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:27,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:27,054 INFO L93 Difference]: Finished difference Result 343 states and 563 transitions. [2022-11-18 19:31:27,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:31:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 19:31:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:27,067 INFO L225 Difference]: With dead ends: 343 [2022-11-18 19:31:27,068 INFO L226 Difference]: Without dead ends: 171 [2022-11-18 19:31:27,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:31:27,077 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 5 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:27,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 486 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:27,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-18 19:31:27,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2022-11-18 19:31:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 117 states have (on average 1.376068376068376) internal successors, (161), 117 states have internal predecessors, (161), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-18 19:31:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 245 transitions. [2022-11-18 19:31:27,135 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 245 transitions. Word has length 32 [2022-11-18 19:31:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:27,136 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 245 transitions. [2022-11-18 19:31:27,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 245 transitions. [2022-11-18 19:31:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:31:27,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:27,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:27,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:31:27,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:27,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1488698589, now seen corresponding path program 1 times [2022-11-18 19:31:27,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:27,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931103996] [2022-11-18 19:31:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:27,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:27,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:27,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931103996] [2022-11-18 19:31:27,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931103996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:27,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:27,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:27,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719911911] [2022-11-18 19:31:27,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:27,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:31:27,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:27,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:31:27,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:31:27,527 INFO L87 Difference]: Start difference. First operand 167 states and 245 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:27,570 INFO L93 Difference]: Finished difference Result 333 states and 490 transitions. [2022-11-18 19:31:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:31:27,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 19:31:27,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:27,574 INFO L225 Difference]: With dead ends: 333 [2022-11-18 19:31:27,574 INFO L226 Difference]: Without dead ends: 169 [2022-11-18 19:31:27,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:31:27,592 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 1 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:27,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 481 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:27,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-18 19:31:27,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2022-11-18 19:31:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 118 states have internal predecessors, (162), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-18 19:31:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 246 transitions. [2022-11-18 19:31:27,612 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 246 transitions. Word has length 36 [2022-11-18 19:31:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:27,612 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 246 transitions. [2022-11-18 19:31:27,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 246 transitions. [2022-11-18 19:31:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 19:31:27,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:27,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:27,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:31:27,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:27,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash 967627515, now seen corresponding path program 1 times [2022-11-18 19:31:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:27,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801640681] [2022-11-18 19:31:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:27,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:28,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:28,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801640681] [2022-11-18 19:31:28,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801640681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:28,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867326074] [2022-11-18 19:31:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:28,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:28,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:28,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:31:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:28,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:31:28,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:28,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:28,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867326074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:28,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:28,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-18 19:31:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366256776] [2022-11-18 19:31:28,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:28,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:31:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:28,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:31:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:31:28,969 INFO L87 Difference]: Start difference. First operand 168 states and 246 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:29,037 INFO L93 Difference]: Finished difference Result 337 states and 495 transitions. [2022-11-18 19:31:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:31:29,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-18 19:31:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:29,040 INFO L225 Difference]: With dead ends: 337 [2022-11-18 19:31:29,040 INFO L226 Difference]: Without dead ends: 172 [2022-11-18 19:31:29,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:31:29,042 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 3 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:29,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 959 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-18 19:31:29,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-11-18 19:31:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 122 states have (on average 1.360655737704918) internal successors, (166), 122 states have internal predecessors, (166), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-18 19:31:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 250 transitions. [2022-11-18 19:31:29,062 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 250 transitions. Word has length 38 [2022-11-18 19:31:29,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:29,063 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 250 transitions. [2022-11-18 19:31:29,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 250 transitions. [2022-11-18 19:31:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 19:31:29,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:29,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:29,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:29,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:29,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:29,311 INFO L85 PathProgramCache]: Analyzing trace with hash -624054089, now seen corresponding path program 2 times [2022-11-18 19:31:29,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:29,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037767194] [2022-11-18 19:31:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:29,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:31:29,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:29,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037767194] [2022-11-18 19:31:29,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037767194] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:29,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567564775] [2022-11-18 19:31:29,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:31:29,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:29,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:29,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:29,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:31:31,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:31:31,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:31:31,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:31:31,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 19:31:31,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:31,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567564775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:31,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:31:31,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 19:31:31,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800803961] [2022-11-18 19:31:31,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:31,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:31:31,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:31,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:31:31,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:31:31,366 INFO L87 Difference]: Start difference. First operand 172 states and 250 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:31,432 INFO L93 Difference]: Finished difference Result 328 states and 489 transitions. [2022-11-18 19:31:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:31:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-18 19:31:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:31,438 INFO L225 Difference]: With dead ends: 328 [2022-11-18 19:31:31,438 INFO L226 Difference]: Without dead ends: 302 [2022-11-18 19:31:31,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:31:31,440 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 203 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:31,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 925 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-18 19:31:31,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 301. [2022-11-18 19:31:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 203 states have (on average 1.4088669950738917) internal successors, (286), 203 states have internal predecessors, (286), 83 states have call successors, (83), 14 states have call predecessors, (83), 14 states have return successors, (91), 83 states have call predecessors, (91), 83 states have call successors, (91) [2022-11-18 19:31:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 460 transitions. [2022-11-18 19:31:31,510 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 460 transitions. Word has length 42 [2022-11-18 19:31:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:31,515 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 460 transitions. [2022-11-18 19:31:31,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 460 transitions. [2022-11-18 19:31:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 19:31:31,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:31,524 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:31,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:31,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:31,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:31,735 INFO L85 PathProgramCache]: Analyzing trace with hash 770462047, now seen corresponding path program 1 times [2022-11-18 19:31:31,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:31,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757219289] [2022-11-18 19:31:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:31,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 19:31:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:31:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:31:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 19:31:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:31:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:31:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 19:31:32,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:32,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757219289] [2022-11-18 19:31:32,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757219289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:32,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234825335] [2022-11-18 19:31:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:32,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:32,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:32,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:31:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:33,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:31:33,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 19:31:33,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 19:31:33,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234825335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:33,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:33,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 9 [2022-11-18 19:31:33,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266413638] [2022-11-18 19:31:33,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:33,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:31:33,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:33,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:31:33,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:31:33,621 INFO L87 Difference]: Start difference. First operand 301 states and 460 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 19:31:35,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:31:36,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:36,470 INFO L93 Difference]: Finished difference Result 609 states and 938 transitions. [2022-11-18 19:31:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:31:36,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 92 [2022-11-18 19:31:36,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:36,492 INFO L225 Difference]: With dead ends: 609 [2022-11-18 19:31:36,492 INFO L226 Difference]: Without dead ends: 321 [2022-11-18 19:31:36,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:31:36,496 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 41 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:36,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 666 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 19:31:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-18 19:31:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 315. [2022-11-18 19:31:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 215 states have (on average 1.3906976744186046) internal successors, (299), 217 states have internal predecessors, (299), 83 states have call successors, (83), 14 states have call predecessors, (83), 16 states have return successors, (97), 83 states have call predecessors, (97), 83 states have call successors, (97) [2022-11-18 19:31:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 479 transitions. [2022-11-18 19:31:36,554 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 479 transitions. Word has length 92 [2022-11-18 19:31:36,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:36,556 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 479 transitions. [2022-11-18 19:31:36,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 19:31:36,557 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 479 transitions. [2022-11-18 19:31:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 19:31:36,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:36,565 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:36,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:36,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:36,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1411815871, now seen corresponding path program 2 times [2022-11-18 19:31:36,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:36,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363353825] [2022-11-18 19:31:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:36,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 19:31:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:31:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:31:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:31:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 19:31:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:31:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:31:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 19:31:38,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:38,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363353825] [2022-11-18 19:31:38,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363353825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:38,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:38,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:31:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515982871] [2022-11-18 19:31:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:38,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:31:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:31:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:31:38,245 INFO L87 Difference]: Start difference. First operand 315 states and 479 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:40,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:31:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:41,724 INFO L93 Difference]: Finished difference Result 654 states and 1009 transitions. [2022-11-18 19:31:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:31:41,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2022-11-18 19:31:41,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:41,738 INFO L225 Difference]: With dead ends: 654 [2022-11-18 19:31:41,738 INFO L226 Difference]: Without dead ends: 628 [2022-11-18 19:31:41,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:31:41,740 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 320 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 142 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:41,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 912 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 692 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-18 19:31:41,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-18 19:31:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 587. [2022-11-18 19:31:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 386 states have (on average 1.422279792746114) internal successors, (549), 393 states have internal predecessors, (549), 165 states have call successors, (165), 28 states have call predecessors, (165), 35 states have return successors, (209), 165 states have call predecessors, (209), 165 states have call successors, (209) [2022-11-18 19:31:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 923 transitions. [2022-11-18 19:31:41,821 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 923 transitions. Word has length 102 [2022-11-18 19:31:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:41,822 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 923 transitions. [2022-11-18 19:31:41,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 923 transitions. [2022-11-18 19:31:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 19:31:41,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:41,829 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:41,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:31:41,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:41,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash 705120661, now seen corresponding path program 1 times [2022-11-18 19:31:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:41,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922306071] [2022-11-18 19:31:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:41,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 19:32:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:14,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:32:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:14,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:14,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:32:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:14,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 19:32:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:14,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:32:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:32:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 19:32:14,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:14,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922306071] [2022-11-18 19:32:14,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922306071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:14,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295368805] [2022-11-18 19:32:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:14,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:14,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:14,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:14,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:32:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:16,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:32:16,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 19:32:16,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:32:16,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295368805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:16,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:32:16,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2022-11-18 19:32:16,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44476485] [2022-11-18 19:32:16,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:16,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:32:16,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:16,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:32:16,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:32:16,212 INFO L87 Difference]: Start difference. First operand 587 states and 923 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:32:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:16,271 INFO L93 Difference]: Finished difference Result 1131 states and 1778 transitions. [2022-11-18 19:32:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:32:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 102 [2022-11-18 19:32:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:16,279 INFO L225 Difference]: With dead ends: 1131 [2022-11-18 19:32:16,279 INFO L226 Difference]: Without dead ends: 587 [2022-11-18 19:32:16,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:32:16,285 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:16,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 482 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:32:16,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-18 19:32:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2022-11-18 19:32:16,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 386 states have (on average 1.4196891191709844) internal successors, (548), 393 states have internal predecessors, (548), 165 states have call successors, (165), 28 states have call predecessors, (165), 35 states have return successors, (209), 165 states have call predecessors, (209), 165 states have call successors, (209) [2022-11-18 19:32:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 922 transitions. [2022-11-18 19:32:16,346 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 922 transitions. Word has length 102 [2022-11-18 19:32:16,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:16,346 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 922 transitions. [2022-11-18 19:32:16,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:32:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 922 transitions. [2022-11-18 19:32:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 19:32:16,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:16,352 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:16,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:16,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:16,563 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:16,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:16,564 INFO L85 PathProgramCache]: Analyzing trace with hash -43967774, now seen corresponding path program 1 times [2022-11-18 19:32:16,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:16,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359742776] [2022-11-18 19:32:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:16,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:32:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:32:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 19:32:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:32:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:32:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 19:32:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 19:32:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:32:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:32:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-18 19:32:48,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:48,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359742776] [2022-11-18 19:32:48,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359742776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:48,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106235245] [2022-11-18 19:32:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:48,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:48,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:48,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:48,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:32:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:49,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2335 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:32:49,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 19:32:49,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:32:49,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106235245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:49,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:32:49,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-11-18 19:32:49,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621146981] [2022-11-18 19:32:49,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:49,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:32:49,918 INFO L87 Difference]: Start difference. First operand 587 states and 922 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 19:32:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:51,316 INFO L93 Difference]: Finished difference Result 1493 states and 2356 transitions. [2022-11-18 19:32:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:32:51,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 118 [2022-11-18 19:32:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:51,324 INFO L225 Difference]: With dead ends: 1493 [2022-11-18 19:32:51,325 INFO L226 Difference]: Without dead ends: 932 [2022-11-18 19:32:51,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:32:51,330 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 402 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:51,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 719 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:32:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-11-18 19:32:51,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 878. [2022-11-18 19:32:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 590 states have (on average 1.3423728813559321) internal successors, (792), 577 states have internal predecessors, (792), 223 states have call successors, (223), 38 states have call predecessors, (223), 64 states have return successors, (336), 262 states have call predecessors, (336), 223 states have call successors, (336) [2022-11-18 19:32:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1351 transitions. [2022-11-18 19:32:51,430 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1351 transitions. Word has length 118 [2022-11-18 19:32:51,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:51,431 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1351 transitions. [2022-11-18 19:32:51,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 19:32:51,431 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1351 transitions. [2022-11-18 19:32:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-18 19:32:51,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:51,435 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:51,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:51,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:32:51,647 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1654405799, now seen corresponding path program 1 times [2022-11-18 19:32:51,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:51,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097910863] [2022-11-18 19:32:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:51,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:33:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:33:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:11,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 19:33:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:11,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:33:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:11,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:33:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:11,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:33:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 19:33:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:11,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 19:33:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-18 19:33:11,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:11,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097910863] [2022-11-18 19:33:11,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097910863] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:11,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109749078] [2022-11-18 19:33:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:11,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:11,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:11,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:11,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:33:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:12,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2346 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-18 19:33:12,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:13,252 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 19:33:13,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 101 treesize of output 133 [2022-11-18 19:33:13,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:33:14,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:33:14,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:33:15,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 40 [2022-11-18 19:33:16,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:33:17,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:33:18,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:33:18,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:18,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 46 [2022-11-18 19:33:18,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 35 [2022-11-18 19:33:18,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:18,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,134 INFO L321 Elim1Store]: treesize reduction 82, result has 35.9 percent of original size [2022-11-18 19:33:19,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 59 treesize of output 86 [2022-11-18 19:33:19,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:19,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-18 19:33:19,177 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-18 19:33:19,356 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:19,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 19:33:19,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:19,696 INFO L350 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 32 treesize of output 35 [2022-11-18 19:33:19,880 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:19,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 13 [2022-11-18 19:33:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-18 19:33:19,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:20,192 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_14205 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_~#__CS_thread_status~0.base| v_ArrVal_14205) |c_~#__CS_thread_allocated~0.base|))) (or (= (mod (select .cse0 (+ |c_~#__CS_thread_allocated~0.offset| 1)) 256) 1) (not (= (mod (select .cse0 (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))))) is different from false [2022-11-18 19:33:20,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109749078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:20,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:33:20,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-18 19:33:20,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590766772] [2022-11-18 19:33:20,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:20,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:33:20,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:20,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:33:20,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=738, Unknown=1, NotChecked=56, Total=930 [2022-11-18 19:33:20,268 INFO L87 Difference]: Start difference. First operand 878 states and 1351 transitions. Second operand has 26 states, 24 states have (on average 5.416666666666667) internal successors, (130), 21 states have internal predecessors, (130), 6 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-18 19:33:22,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:33:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:26,758 INFO L93 Difference]: Finished difference Result 2221 states and 3322 transitions. [2022-11-18 19:33:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:33:26,759 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.416666666666667) internal successors, (130), 21 states have internal predecessors, (130), 6 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 119 [2022-11-18 19:33:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:26,769 INFO L225 Difference]: With dead ends: 2221 [2022-11-18 19:33:26,769 INFO L226 Difference]: Without dead ends: 1392 [2022-11-18 19:33:26,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=331, Invalid=1928, Unknown=1, NotChecked=92, Total=2352 [2022-11-18 19:33:26,777 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 497 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 540 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 600 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:26,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1634 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 1992 Invalid, 1 Unknown, 600 Unchecked, 5.2s Time] [2022-11-18 19:33:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2022-11-18 19:33:26,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1247. [2022-11-18 19:33:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 840 states have (on average 1.3357142857142856) internal successors, (1122), 826 states have internal predecessors, (1122), 305 states have call successors, (305), 58 states have call predecessors, (305), 101 states have return successors, (443), 362 states have call predecessors, (443), 305 states have call successors, (443) [2022-11-18 19:33:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1870 transitions. [2022-11-18 19:33:26,971 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1870 transitions. Word has length 119 [2022-11-18 19:33:26,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:26,972 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 1870 transitions. [2022-11-18 19:33:26,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.416666666666667) internal successors, (130), 21 states have internal predecessors, (130), 6 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-18 19:33:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1870 transitions. [2022-11-18 19:33:26,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:33:26,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:26,976 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:26,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:27,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:27,189 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:27,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:27,189 INFO L85 PathProgramCache]: Analyzing trace with hash 452465192, now seen corresponding path program 1 times [2022-11-18 19:33:27,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:27,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829283929] [2022-11-18 19:33:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:27,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:33:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:33:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:33:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:33:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 19:33:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 19:33:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 19:33:28,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:28,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829283929] [2022-11-18 19:33:28,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829283929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:28,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:28,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:33:28,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327251016] [2022-11-18 19:33:28,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:28,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:33:28,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:28,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:33:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:28,234 INFO L87 Difference]: Start difference. First operand 1247 states and 1870 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:33:30,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:33:31,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:31,483 INFO L93 Difference]: Finished difference Result 2165 states and 3240 transitions. [2022-11-18 19:33:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:33:31,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 103 [2022-11-18 19:33:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:31,492 INFO L225 Difference]: With dead ends: 2165 [2022-11-18 19:33:31,493 INFO L226 Difference]: Without dead ends: 1263 [2022-11-18 19:33:31,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:33:31,498 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 394 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 311 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:31,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 863 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 537 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 19:33:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-11-18 19:33:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1197. [2022-11-18 19:33:31,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 810 states have (on average 1.3333333333333333) internal successors, (1080), 800 states have internal predecessors, (1080), 285 states have call successors, (285), 58 states have call predecessors, (285), 101 states have return successors, (417), 338 states have call predecessors, (417), 285 states have call successors, (417) [2022-11-18 19:33:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1782 transitions. [2022-11-18 19:33:31,666 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1782 transitions. Word has length 103 [2022-11-18 19:33:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:31,666 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1782 transitions. [2022-11-18 19:33:31,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:33:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1782 transitions. [2022-11-18 19:33:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:33:31,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:31,670 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:31,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:33:31,670 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:31,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1848698984, now seen corresponding path program 1 times [2022-11-18 19:33:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:31,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216594262] [2022-11-18 19:33:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:33:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:33:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:33:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:48,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:33:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 19:33:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 19:33:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 19:33:48,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:48,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216594262] [2022-11-18 19:33:48,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216594262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:48,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:48,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:33:48,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238862812] [2022-11-18 19:33:48,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:48,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:33:48,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:33:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:48,268 INFO L87 Difference]: Start difference. First operand 1197 states and 1782 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:33:50,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:33:52,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:33:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:53,628 INFO L93 Difference]: Finished difference Result 2098 states and 3128 transitions. [2022-11-18 19:33:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:33:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 103 [2022-11-18 19:33:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:53,637 INFO L225 Difference]: With dead ends: 2098 [2022-11-18 19:33:53,637 INFO L226 Difference]: Without dead ends: 1173 [2022-11-18 19:33:53,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:33:53,643 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 353 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 197 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:53,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 788 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 574 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-11-18 19:33:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-11-18 19:33:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1124. [2022-11-18 19:33:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 764 states have (on average 1.3324607329842932) internal successors, (1018), 755 states have internal predecessors, (1018), 265 states have call successors, (265), 54 states have call predecessors, (265), 94 states have return successors, (391), 314 states have call predecessors, (391), 265 states have call successors, (391) [2022-11-18 19:33:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1674 transitions. [2022-11-18 19:33:53,809 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1674 transitions. Word has length 103 [2022-11-18 19:33:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:53,810 INFO L495 AbstractCegarLoop]: Abstraction has 1124 states and 1674 transitions. [2022-11-18 19:33:53,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:33:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1674 transitions. [2022-11-18 19:33:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-18 19:33:53,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:53,814 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:53,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:33:53,814 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:53,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1894645545, now seen corresponding path program 1 times [2022-11-18 19:33:53,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:53,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90085218] [2022-11-18 19:33:53,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:53,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:36:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 19:36:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:36:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:36:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:36:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 19:36:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 19:36:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:36:44,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:44,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90085218] [2022-11-18 19:36:44,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90085218] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:44,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720155962] [2022-11-18 19:36:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:44,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:44,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:44,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:44,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:36:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:47,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2335 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-18 19:36:47,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:47,720 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 19:36:47,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 101 treesize of output 133 [2022-11-18 19:36:48,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:36:49,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:36:49,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:36:50,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 40 [2022-11-18 19:36:51,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:36:52,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:36:53,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:36:53,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:36:53,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 46 [2022-11-18 19:36:53,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 35 [2022-11-18 19:36:54,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,300 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-18 19:36:54,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 76 [2022-11-18 19:36:54,341 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:36:54,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-18 19:36:54,363 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-18 19:36:54,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:36:54,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 19:36:55,304 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:36:55,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 13 [2022-11-18 19:36:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-18 19:36:55,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:57,083 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#__CS_cp_ma~0#1.offset| Int) (|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_18335 (Array Int Int)) (v_ArrVal_18336 (Array Int Int)) (|ULTIMATE.start_main_#t~nondet50#1| Int) (v_ArrVal_18339 (Array Int Int)) (v_ArrVal_18329 (Array Int Int)) (v_ArrVal_18344 (Array Int Int)) (v_ArrVal_18334 (Array Int Int)) (v_ArrVal_18356 (Array Int Int)) (v_ArrVal_18345 (Array Int Int)) (v_ArrVal_18353 (Array Int Int)) (v_ArrVal_18332 (Array Int Int)) (v_ArrVal_18354 (Array Int Int))) (let ((.cse0 (select (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base|) (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~#__CS_cp_ma~0#1.offset|) |ULTIMATE.start_main_#t~nondet50#1|)) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_18334) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_18329) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_18332) |c_~#__CS_thread_status~0.base| v_ArrVal_18336) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_18339) |c_~#ma~0.base| v_ArrVal_18353) |c_~#mb~0.base| v_ArrVal_18335) |c_~#data1~0.base| v_ArrVal_18356) |c_~#data2~0.base| v_ArrVal_18354) |c_~#__CS_thread_born_round~0.base| v_ArrVal_18345) |c_~#__CS_thread_status~0.base| v_ArrVal_18344) |c_~#__CS_thread_allocated~0.base|))) (or (not (= (mod (select .cse0 (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1)) (= (mod (select .cse0 (+ |c_~#__CS_thread_allocated~0.offset| 1)) 256) 1)))) is different from false [2022-11-18 19:37:13,212 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#__CS_cp_ma~0#1.offset| Int) (|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_18324 (Array Int Int)) (v_ArrVal_18335 (Array Int Int)) (v_ArrVal_18325 (Array Int Int)) (v_ArrVal_18336 (Array Int Int)) (|ULTIMATE.start_main_#t~nondet50#1| Int) (v_ArrVal_18339 (Array Int Int)) (v_ArrVal_18329 (Array Int Int)) (v_ArrVal_18322 (Array Int Int)) (v_ArrVal_18344 (Array Int Int)) (v_ArrVal_18323 (Array Int Int)) (v_ArrVal_18334 (Array Int Int)) (v_ArrVal_18356 (Array Int Int)) (v_ArrVal_18345 (Array Int Int)) (v_ArrVal_18353 (Array Int Int)) (v_ArrVal_18332 (Array Int Int)) (v_ArrVal_18354 (Array Int Int))) (let ((.cse0 (select (store (store (store (store (store (store (store (store (store (store (store (let ((.cse1 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_18322) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_18323) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_18325) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_18324))) (store .cse1 |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base|) (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~#__CS_cp_ma~0#1.offset|) |ULTIMATE.start_main_#t~nondet50#1|))) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_18334) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_18329) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_18332) |c_~#__CS_thread_status~0.base| v_ArrVal_18336) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_18339) |c_~#ma~0.base| v_ArrVal_18353) |c_~#mb~0.base| v_ArrVal_18335) |c_~#data1~0.base| v_ArrVal_18356) |c_~#data2~0.base| v_ArrVal_18354) |c_~#__CS_thread_born_round~0.base| v_ArrVal_18345) |c_~#__CS_thread_status~0.base| v_ArrVal_18344) |c_~#__CS_thread_allocated~0.base|))) (or (= (mod (select .cse0 (+ |c_~#__CS_thread_allocated~0.offset| 1)) 256) 1) (not (= (mod (select .cse0 (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))))) is different from false [2022-11-18 19:37:36,860 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_18324 (Array Int Int)) (v_ArrVal_18325 (Array Int Int)) (v_ArrVal_18329 (Array Int Int)) (v_ArrVal_18322 (Array Int Int)) (v_ArrVal_18344 (Array Int Int)) (v_ArrVal_18323 (Array Int Int)) (v_ArrVal_18345 (Array Int Int)) (v_ArrVal_18320 (Array Int Int)) (v_ArrVal_18321 (Array Int Int)) (|ULTIMATE.start_main_~#__CS_cp_ma~0#1.offset| Int) (v_ArrVal_18315 (Array Int Int)) (v_ArrVal_18316 (Array Int Int)) (v_ArrVal_18313 (Array Int Int)) (v_ArrVal_18335 (Array Int Int)) (v_ArrVal_18314 (Array Int Int)) (v_ArrVal_18336 (Array Int Int)) (v_ArrVal_18319 (Array Int Int)) (|ULTIMATE.start_main_#t~nondet50#1| Int) (v_ArrVal_18317 (Array Int Int)) (v_ArrVal_18339 (Array Int Int)) (v_ArrVal_18318 (Array Int Int)) (v_ArrVal_18312 (Array Int Int)) (v_ArrVal_18334 (Array Int Int)) (v_ArrVal_18356 (Array Int Int)) (v_ArrVal_18353 (Array Int Int)) (v_ArrVal_18332 (Array Int Int)) (v_ArrVal_18354 (Array Int Int))) (let ((.cse0 (select (store (store (store (store (store (store (store (store (store (store (store (let ((.cse1 (store (store (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_18313) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_18312) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_18315) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_18314) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_18319) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_18318) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_18316) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_18317) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_18320) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_18321) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_18322) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_18323) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_18325) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_18324))) (store .cse1 |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base|) (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~#__CS_cp_ma~0#1.offset|) |ULTIMATE.start_main_#t~nondet50#1|))) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_18334) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_18329) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_18332) |c_~#__CS_thread_status~0.base| v_ArrVal_18336) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_18339) |c_~#ma~0.base| v_ArrVal_18353) |c_~#mb~0.base| v_ArrVal_18335) |c_~#data1~0.base| v_ArrVal_18356) |c_~#data2~0.base| v_ArrVal_18354) |c_~#__CS_thread_born_round~0.base| v_ArrVal_18345) |c_~#__CS_thread_status~0.base| v_ArrVal_18344) |c_~#__CS_thread_allocated~0.base|))) (or (not (= (mod (select .cse0 (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1)) (= (mod (select .cse0 (+ |c_~#__CS_thread_allocated~0.offset| 1)) 256) 1)))) is different from false [2022-11-18 19:37:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 15 refuted. 7 times theorem prover too weak. 50 trivial. 31 not checked. [2022-11-18 19:37:41,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720155962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:41,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:37:41,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 17] total 49 [2022-11-18 19:37:41,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702818300] [2022-11-18 19:37:41,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:41,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 19:37:41,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:41,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 19:37:41,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1729, Unknown=60, NotChecked=270, Total=2352 [2022-11-18 19:37:41,193 INFO L87 Difference]: Start difference. First operand 1124 states and 1674 transitions. Second operand has 49 states, 48 states have (on average 3.7708333333333335) internal successors, (181), 45 states have internal predecessors, (181), 8 states have call successors, (27), 9 states have call predecessors, (27), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-18 19:37:51,602 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 294 DAG size of output: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:38:34,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:51,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:51,530 INFO L93 Difference]: Finished difference Result 1607 states and 2329 transitions. [2022-11-18 19:38:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 19:38:51,531 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 3.7708333333333335) internal successors, (181), 45 states have internal predecessors, (181), 8 states have call successors, (27), 9 states have call predecessors, (27), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 119 [2022-11-18 19:38:51,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:51,541 INFO L225 Difference]: With dead ends: 1607 [2022-11-18 19:38:51,541 INFO L226 Difference]: Without dead ends: 1211 [2022-11-18 19:38:51,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 242 SyntacticMatches, 10 SemanticMatches, 73 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 102.1s TimeCoverageRelationStatistics Valid=784, Invalid=4265, Unknown=75, NotChecked=426, Total=5550 [2022-11-18 19:38:51,595 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 360 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 179 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1949 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:51,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2681 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1756 Invalid, 1 Unknown, 1949 Unchecked, 15.1s Time] [2022-11-18 19:38:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-11-18 19:38:51,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1143. [2022-11-18 19:38:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 779 states have (on average 1.326059050064185) internal successors, (1033), 773 states have internal predecessors, (1033), 265 states have call successors, (265), 54 states have call predecessors, (265), 98 states have return successors, (397), 315 states have call predecessors, (397), 265 states have call successors, (397) [2022-11-18 19:38:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1695 transitions. [2022-11-18 19:38:51,801 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1695 transitions. Word has length 119 [2022-11-18 19:38:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:51,801 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1695 transitions. [2022-11-18 19:38:51,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 3.7708333333333335) internal successors, (181), 45 states have internal predecessors, (181), 8 states have call successors, (27), 9 states have call predecessors, (27), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-18 19:38:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1695 transitions. [2022-11-18 19:38:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 19:38:51,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:51,807 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:51,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:52,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:38:52,021 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:52,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1450188452, now seen corresponding path program 1 times [2022-11-18 19:38:52,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:52,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884778129] [2022-11-18 19:38:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:52,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:38:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:38:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 19:38:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:38:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:38:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:38:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:38:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:38:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 19:38:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 19:38:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 19:38:53,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:53,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884778129] [2022-11-18 19:38:53,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884778129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:53,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461866107] [2022-11-18 19:38:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:53,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:53,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:53,833 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:53,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:38:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:55,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:38:55,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:55,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-18 19:38:56,101 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 14 [2022-11-18 19:38:56,579 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-18 19:38:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 50 proven. 8 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-18 19:38:56,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:56,890 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 8 [2022-11-18 19:38:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-18 19:38:57,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461866107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:57,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:57,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-11-18 19:38:57,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911237126] [2022-11-18 19:38:57,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:57,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:38:57,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:57,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:38:57,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:38:57,769 INFO L87 Difference]: Start difference. First operand 1143 states and 1695 transitions. Second operand has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 10 states have internal predecessors, (152), 10 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (25), 10 states have call predecessors, (25), 10 states have call successors, (25) [2022-11-18 19:38:59,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:10,774 INFO L93 Difference]: Finished difference Result 2149 states and 3200 transitions. [2022-11-18 19:39:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:39:10,775 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 10 states have internal predecessors, (152), 10 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (25), 10 states have call predecessors, (25), 10 states have call successors, (25) Word has length 135 [2022-11-18 19:39:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:10,784 INFO L225 Difference]: With dead ends: 2149 [2022-11-18 19:39:10,784 INFO L226 Difference]: Without dead ends: 1052 [2022-11-18 19:39:10,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:39:10,792 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 939 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 815 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 815 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:10,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1206 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [815 Valid, 1280 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-11-18 19:39:10,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-11-18 19:39:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 891. [2022-11-18 19:39:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 620 states have (on average 1.3) internal successors, (806), 613 states have internal predecessors, (806), 190 states have call successors, (190), 47 states have call predecessors, (190), 80 states have return successors, (274), 230 states have call predecessors, (274), 190 states have call successors, (274) [2022-11-18 19:39:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1270 transitions. [2022-11-18 19:39:10,967 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1270 transitions. Word has length 135 [2022-11-18 19:39:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:10,967 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1270 transitions. [2022-11-18 19:39:10,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 10 states have internal predecessors, (152), 10 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (25), 10 states have call predecessors, (25), 10 states have call successors, (25) [2022-11-18 19:39:10,968 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1270 transitions. [2022-11-18 19:39:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 19:39:10,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:10,972 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:10,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:11,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:39:11,185 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:11,186 INFO L85 PathProgramCache]: Analyzing trace with hash -544925729, now seen corresponding path program 1 times [2022-11-18 19:39:11,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:11,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7611587] [2022-11-18 19:39:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:11,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:36,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:39:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:36,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:39:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:36,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 19:39:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:37,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:39:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:37,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 19:39:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:39:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:37,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:39:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:37,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:39:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:37,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:39:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 19:39:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:38,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 19:39:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-18 19:39:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:38,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7611587] [2022-11-18 19:39:38,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7611587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:38,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965274794] [2022-11-18 19:39:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:38,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:38,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:38,119 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:38,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:39:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:40,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 195 conjunts are in the unsatisfiable core [2022-11-18 19:39:40,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:43,523 INFO L321 Elim1Store]: treesize reduction 288, result has 37.0 percent of original size [2022-11-18 19:39:43,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 57 case distinctions, treesize of input 126 treesize of output 268 [2022-11-18 19:39:47,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 33 [2022-11-18 19:39:51,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 33 [2022-11-18 19:39:53,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 33 [2022-11-18 19:39:57,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 43 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 43 [2022-11-18 19:40:01,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 33 [2022-11-18 19:40:05,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 33 [2022-11-18 19:40:07,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 33 [2022-11-18 19:40:10,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 19:40:10,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 28 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-11-18 19:40:12,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:12,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:16,871 INFO L321 Elim1Store]: treesize reduction 174, result has 24.0 percent of original size [2022-11-18 19:40:16,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 6 select indices, 6 select index equivalence classes, 42 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 303 treesize of output 903 [2022-11-18 19:40:17,009 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 29 [2022-11-18 19:40:17,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 57 treesize of output 59 [2022-11-18 19:40:17,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-18 19:40:17,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:17,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 62 treesize of output 76 [2022-11-18 19:40:17,578 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-18 19:40:17,971 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-18 19:40:19,090 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:40:19,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 27 treesize of output 27 [2022-11-18 19:40:48,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,136 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-18 19:40:49,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 44 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 655 treesize of output 502 [2022-11-18 19:40:49,247 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 1 [2022-11-18 19:40:49,289 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 1 [2022-11-18 19:40:49,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 7 [2022-11-18 19:40:49,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:50,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:50,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:50,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:50,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:50,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:50,324 INFO L217 Elim1Store]: Index analysis took 337 ms [2022-11-18 19:40:50,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 287 treesize of output 154 [2022-11-18 19:40:50,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 9 [2022-11-18 19:40:50,410 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 1 [2022-11-18 19:40:59,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:59,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 16 [2022-11-18 19:41:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-18 19:41:03,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:04,513 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_22590 (Array Int Int))) (not (let ((.cse0 (store |c_#memory_int| |c_~#__CS_thread_status~0.base| v_ArrVal_22590))) (= (mod (select (select .cse0 |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.offset| 1)) 256) (mod (select (select .cse0 |c_~#ma~0.base|) |c_~#ma~0.offset|) 256))))) is different from false [2022-11-18 19:41:05,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965274794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:05,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:41:05,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2022-11-18 19:41:05,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652476092] [2022-11-18 19:41:05,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:05,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:41:05,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:05,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:41:05,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=618, Unknown=3, NotChecked=50, Total=756 [2022-11-18 19:41:05,904 INFO L87 Difference]: Start difference. First operand 891 states and 1270 transitions. Second operand has 24 states, 22 states have (on average 6.2272727272727275) internal successors, (137), 19 states have internal predecessors, (137), 7 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-18 19:41:09,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:51,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:51,264 INFO L93 Difference]: Finished difference Result 2405 states and 3368 transitions. [2022-11-18 19:41:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 19:41:51,265 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 6.2272727272727275) internal successors, (137), 19 states have internal predecessors, (137), 7 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 136 [2022-11-18 19:41:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:51,276 INFO L225 Difference]: With dead ends: 2405 [2022-11-18 19:41:51,276 INFO L226 Difference]: Without dead ends: 1819 [2022-11-18 19:41:51,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=429, Invalid=3112, Unknown=3, NotChecked=116, Total=3660 [2022-11-18 19:41:51,281 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 906 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 4758 mSolverCounterSat, 506 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 6010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 4758 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 745 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:51,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 2931 Invalid, 6010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [506 Valid, 4758 Invalid, 1 Unknown, 745 Unchecked, 31.9s Time] [2022-11-18 19:41:51,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2022-11-18 19:41:51,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1468. [2022-11-18 19:41:51,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 999 states have (on average 1.3103103103103102) internal successors, (1309), 985 states have internal predecessors, (1309), 341 states have call successors, (341), 78 states have call predecessors, (341), 127 states have return successors, (484), 404 states have call predecessors, (484), 341 states have call successors, (484) [2022-11-18 19:41:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2134 transitions. [2022-11-18 19:41:51,589 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2134 transitions. Word has length 136 [2022-11-18 19:41:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:51,589 INFO L495 AbstractCegarLoop]: Abstraction has 1468 states and 2134 transitions. [2022-11-18 19:41:51,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 6.2272727272727275) internal successors, (137), 19 states have internal predecessors, (137), 7 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-18 19:41:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2134 transitions. [2022-11-18 19:41:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:41:51,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:51,595 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:51,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:51,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:41:51,809 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:51,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1751813610, now seen corresponding path program 1 times [2022-11-18 19:41:51,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:51,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878411516] [2022-11-18 19:41:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:51,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:42:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:42:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:42:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:42:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 19:42:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:42:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:42:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:42:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:42:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:42:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:42:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 19:42:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 19:42:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-18 19:42:27,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:27,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878411516] [2022-11-18 19:42:27,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878411516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:27,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778280069] [2022-11-18 19:42:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:27,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:27,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:27,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:27,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:42:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:30,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 113 conjunts are in the unsatisfiable core [2022-11-18 19:42:30,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:30,967 INFO L321 Elim1Store]: treesize reduction 144, result has 14.8 percent of original size [2022-11-18 19:42:30,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 96 treesize of output 106 [2022-11-18 19:42:32,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-18 19:42:33,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-18 19:42:34,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-18 19:42:36,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 18 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 33 [2022-11-18 19:42:37,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-18 19:42:38,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-18 19:42:39,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-11-18 19:42:39,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:42:41,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 33 [2022-11-18 19:42:41,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:41,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:42,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:42,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:42,018 INFO L217 Elim1Store]: Index analysis took 190 ms [2022-11-18 19:42:42,474 INFO L321 Elim1Store]: treesize reduction 82, result has 35.9 percent of original size [2022-11-18 19:42:42,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 79 [2022-11-18 19:42:42,526 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 20 [2022-11-18 19:42:42,566 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-18 19:42:43,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:42:43,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-11-18 19:42:45,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:45,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:45,369 INFO L350 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 30 treesize of output 33 [2022-11-18 19:42:45,779 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:42:45,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2022-11-18 19:42:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 60 proven. 16 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-18 19:42:46,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:47,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778280069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:47,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:42:47,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-11-18 19:42:47,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985690140] [2022-11-18 19:42:47,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:47,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:42:47,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:42:47,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=638, Unknown=4, NotChecked=0, Total=756 [2022-11-18 19:42:47,539 INFO L87 Difference]: Start difference. First operand 1468 states and 2134 transitions. Second operand has 25 states, 24 states have (on average 5.791666666666667) internal successors, (139), 20 states have internal predecessors, (139), 7 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-18 19:42:51,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:52,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:55,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:36,956 INFO L93 Difference]: Finished difference Result 3856 states and 5494 transitions. [2022-11-18 19:43:36,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 19:43:36,957 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.791666666666667) internal successors, (139), 20 states have internal predecessors, (139), 7 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 148 [2022-11-18 19:43:36,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:36,973 INFO L225 Difference]: With dead ends: 3856 [2022-11-18 19:43:36,974 INFO L226 Difference]: Without dead ends: 2696 [2022-11-18 19:43:36,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=795, Invalid=4456, Unknown=5, NotChecked=0, Total=5256 [2022-11-18 19:43:36,982 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1594 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 1115 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 5583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 806 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:36,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 1844 Invalid, 5583 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1115 Valid, 3661 Invalid, 1 Unknown, 806 Unchecked, 30.6s Time] [2022-11-18 19:43:36,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2022-11-18 19:43:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2177. [2022-11-18 19:43:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 1477 states have (on average 1.3019634394041977) internal successors, (1923), 1453 states have internal predecessors, (1923), 502 states have call successors, (502), 130 states have call predecessors, (502), 197 states have return successors, (712), 593 states have call predecessors, (712), 502 states have call successors, (712) [2022-11-18 19:43:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3137 transitions. [2022-11-18 19:43:37,520 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3137 transitions. Word has length 148 [2022-11-18 19:43:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:37,523 INFO L495 AbstractCegarLoop]: Abstraction has 2177 states and 3137 transitions. [2022-11-18 19:43:37,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.791666666666667) internal successors, (139), 20 states have internal predecessors, (139), 7 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-18 19:43:37,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3137 transitions. [2022-11-18 19:43:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:43:37,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:37,532 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:37,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:37,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:43:37,749 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:37,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash 765440237, now seen corresponding path program 1 times [2022-11-18 19:43:37,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:37,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985297065] [2022-11-18 19:43:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:37,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:38,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:43:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:43:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:43:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:43:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 19:43:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:43:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:43:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:43:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:43:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:43:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:43:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 19:43:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 19:43:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:43:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-18 19:43:39,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:39,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985297065] [2022-11-18 19:43:39,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985297065] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:39,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757562013] [2022-11-18 19:43:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:39,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:39,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:39,742 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:39,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95353d6-4338-454d-ad81-2bce41ff7956/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:43:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:41,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:43:41,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:43,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:43:43,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:43:43,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:43:56,255 WARN L233 SmtUtils]: Spent 13.14s on a formula simplification. DAG size of input: 307 DAG size of output: 95 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 19:43:56,256 INFO L321 Elim1Store]: treesize reduction 1470, result has 21.0 percent of original size [2022-11-18 19:43:56,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 1178 treesize of output 1617 [2022-11-18 19:43:56,579 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-18 19:43:56,850 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-18 19:43:57,336 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-18 19:43:57,579 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-18 19:43:57,867 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7