./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y --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 a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:48:26,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:48:26,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:48:26,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:48:26,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:48:26,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:48:26,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:48:26,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:48:26,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:48:26,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:48:26,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:48:26,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:48:26,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:48:26,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:48:26,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:48:26,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:48:26,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:48:26,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:48:26,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:48:26,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:48:26,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:48:26,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:48:26,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:48:26,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:48:26,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:48:26,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:48:26,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:48:26,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:48:26,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:48:26,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:48:26,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:48:26,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:48:26,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:48:26,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:48:26,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:48:26,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:48:26,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:48:26,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:48:26,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:48:26,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:48:26,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:48:26,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:48:26,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:48:26,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:48:26,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:48:26,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:48:26,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:48:26,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:48:26,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:48:26,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:48:26,273 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:48:26,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:48:26,273 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:48:26,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:48:26,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:48:26,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:48:26,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:48:26,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:48:26,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:48:26,275 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:48:26,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:48:26,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:48:26,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:48:26,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:48:26,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:48:26,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:48:26,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:48:26,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:48:26,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:48:26,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:48:26,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:48:26,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:48:26,278 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:48:26,278 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:48:26,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:48:26,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:48:26,279 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_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 [2021-11-13 18:48:26,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:48:26,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:48:26,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:48:26,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:48:26,575 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:48:26,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-11-13 18:48:26,650 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/data/d8fa51d9a/d4a211a117e64049b1efd45b4a9e0c64/FLAG6e1d53d96 [2021-11-13 18:48:27,193 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:48:27,194 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-11-13 18:48:27,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/data/d8fa51d9a/d4a211a117e64049b1efd45b4a9e0c64/FLAG6e1d53d96 [2021-11-13 18:48:27,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/data/d8fa51d9a/d4a211a117e64049b1efd45b4a9e0c64 [2021-11-13 18:48:27,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:48:27,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:48:27,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:48:27,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:48:27,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:48:27,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:27,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69118ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27, skipping insertion in model container [2021-11-13 18:48:27,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:27,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:48:27,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:48:27,864 WARN L228 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_f050239b-0414-4b13-97d1-c66992d32ac8/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-11-13 18:48:27,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:48:27,875 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:48:27,936 WARN L228 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_f050239b-0414-4b13-97d1-c66992d32ac8/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-11-13 18:48:27,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:48:27,980 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:48:27,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27 WrapperNode [2021-11-13 18:48:27,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:48:27,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:48:27,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:48:27,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:48:27,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:28,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:28,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:48:28,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:48:28,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:48:28,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:48:28,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:28,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:28,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:28,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:28,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:28,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:28,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:28,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:48:28,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:48:28,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:48:28,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:48:28,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (1/1) ... [2021-11-13 18:48:28,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:48:28,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:48:28,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:48:28,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:48:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-13 18:48:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-13 18:48:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:48:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:48:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:48:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:48:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:48:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:48:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:48:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:48:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:48:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:48:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:48:28,347 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-13 18:48:28,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:48:28,537 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-13 18:48:28,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:48:28 BoogieIcfgContainer [2021-11-13 18:48:28,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:48:28,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:48:28,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:48:28,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:48:28,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:48:27" (1/3) ... [2021-11-13 18:48:28,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18553751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:48:28, skipping insertion in model container [2021-11-13 18:48:28,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:27" (2/3) ... [2021-11-13 18:48:28,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18553751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:48:28, skipping insertion in model container [2021-11-13 18:48:28,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:48:28" (3/3) ... [2021-11-13 18:48:28,548 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2021-11-13 18:48:28,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:48:28,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:48:28,628 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:48:28,635 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:48:28,635 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:48:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 28 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:48:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:48:28,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:28,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:28,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash -670387442, now seen corresponding path program 1 times [2021-11-13 18:48:28,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:28,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640064388] [2021-11-13 18:48:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:28,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:28,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:28,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640064388] [2021-11-13 18:48:28,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640064388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:28,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:28,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:48:28,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174405830] [2021-11-13 18:48:28,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:28,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:48:28,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:48:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:48:28,875 INFO L87 Difference]: Start difference. First operand has 30 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 28 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-11-13 18:48:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:28,894 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2021-11-13 18:48:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:48:28,896 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2021-11-13 18:48:28,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:28,902 INFO L225 Difference]: With dead ends: 52 [2021-11-13 18:48:28,902 INFO L226 Difference]: Without dead ends: 21 [2021-11-13 18:48:28,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:48:28,908 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:28,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:48:28,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-13 18:48:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-13 18:48:28,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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) [2021-11-13 18:48:28,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-11-13 18:48:28,940 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2021-11-13 18:48:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:28,940 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-11-13 18:48:28,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-11-13 18:48:28,941 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-11-13 18:48:28,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:48:28,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:28,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:28,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:48:28,943 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:28,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:28,944 INFO L85 PathProgramCache]: Analyzing trace with hash -888049989, now seen corresponding path program 1 times [2021-11-13 18:48:28,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:28,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747631622] [2021-11-13 18:48:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:28,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:29,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:29,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747631622] [2021-11-13 18:48:29,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747631622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:29,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:29,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:48:29,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855802992] [2021-11-13 18:48:29,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:29,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:48:29,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:29,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:48:29,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:48:29,073 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-13 18:48:29,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:29,087 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-11-13 18:48:29,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:48:29,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-11-13 18:48:29,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:29,089 INFO L225 Difference]: With dead ends: 40 [2021-11-13 18:48:29,089 INFO L226 Difference]: Without dead ends: 26 [2021-11-13 18:48:29,090 INFO L932 BasicCegarLoop]: 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 [2021-11-13 18:48:29,091 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.48ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:29,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.94ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 7.48ms Time] [2021-11-13 18:48:29,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-13 18:48:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2021-11-13 18:48:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2021-11-13 18:48:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-11-13 18:48:29,097 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2021-11-13 18:48:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:29,098 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-11-13 18:48:29,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-13 18:48:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-11-13 18:48:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 18:48:29,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:29,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:29,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:48:29,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:29,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash -116753941, now seen corresponding path program 1 times [2021-11-13 18:48:29,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:29,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958427863] [2021-11-13 18:48:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:29,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:29,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:29,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958427863] [2021-11-13 18:48:29,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958427863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:29,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:29,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:48:29,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856373027] [2021-11-13 18:48:29,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:29,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:48:29,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:29,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:48:29,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:48:29,222 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-13 18:48:29,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:29,244 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-11-13 18:48:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:48:29,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-11-13 18:48:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:29,245 INFO L225 Difference]: With dead ends: 45 [2021-11-13 18:48:29,245 INFO L226 Difference]: Without dead ends: 26 [2021-11-13 18:48:29,246 INFO L932 BasicCegarLoop]: 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 [2021-11-13 18:48:29,248 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.94ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.79ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:29,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 44 Invalid, 7 Unknown, 0 Unchecked, 0.94ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 15.79ms Time] [2021-11-13 18:48:29,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-13 18:48:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-11-13 18:48:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2021-11-13 18:48:29,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-11-13 18:48:29,254 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2021-11-13 18:48:29,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:29,254 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-11-13 18:48:29,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-13 18:48:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-11-13 18:48:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 18:48:29,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:29,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:29,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:48:29,256 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:29,257 INFO L85 PathProgramCache]: Analyzing trace with hash -703559955, now seen corresponding path program 1 times [2021-11-13 18:48:29,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:29,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576925810] [2021-11-13 18:48:29,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:29,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:29,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:29,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576925810] [2021-11-13 18:48:29,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576925810] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:48:29,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634482071] [2021-11-13 18:48:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:29,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:48:29,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:48:29,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:48:29,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:48:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:29,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:48:29,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:48:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:29,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:48:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:29,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634482071] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:48:29,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:48:29,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-13 18:48:29,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79303496] [2021-11-13 18:48:29,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:48:29,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:48:29,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:48:29,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:48:29,781 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-13 18:48:29,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:29,800 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2021-11-13 18:48:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:48:29,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 18 [2021-11-13 18:48:29,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:29,801 INFO L225 Difference]: With dead ends: 41 [2021-11-13 18:48:29,802 INFO L226 Difference]: Without dead ends: 27 [2021-11-13 18:48:29,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:48:29,803 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:29,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 9 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 10.49ms Time] [2021-11-13 18:48:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-13 18:48:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-13 18:48:29,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 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) [2021-11-13 18:48:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-11-13 18:48:29,810 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 18 [2021-11-13 18:48:29,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:29,810 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-11-13 18:48:29,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-13 18:48:29,810 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-11-13 18:48:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 18:48:29,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:29,812 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:29,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:48:30,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:48:30,037 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:30,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:30,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1057796345, now seen corresponding path program 1 times [2021-11-13 18:48:30,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:30,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261883779] [2021-11-13 18:48:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:30,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:48:30,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:30,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261883779] [2021-11-13 18:48:30,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261883779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:30,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:30,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 18:48:30,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139597109] [2021-11-13 18:48:30,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:30,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:48:30,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:48:30,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:48:30,504 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 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) [2021-11-13 18:48:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:30,973 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-11-13 18:48:30,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:48:30,975 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 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 23 [2021-11-13 18:48:30,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:30,976 INFO L225 Difference]: With dead ends: 30 [2021-11-13 18:48:30,976 INFO L226 Difference]: Without dead ends: 28 [2021-11-13 18:48:30,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:48:30,978 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 54 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.15ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 205.17ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:30,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 46 Invalid, 167 Unknown, 0 Unchecked, 4.15ms Time], IncrementalHoareTripleChecker [26 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 205.17ms Time] [2021-11-13 18:48:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-13 18:48:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-11-13 18:48:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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) [2021-11-13 18:48:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-13 18:48:30,985 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2021-11-13 18:48:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:30,985 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-13 18:48:30,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 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) [2021-11-13 18:48:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-13 18:48:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 18:48:30,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:30,989 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:30,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:48:30,989 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:30,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1364928246, now seen corresponding path program 1 times [2021-11-13 18:48:30,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:30,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387915567] [2021-11-13 18:48:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:30,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:48:31,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:31,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387915567] [2021-11-13 18:48:31,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387915567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:31,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:31,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 18:48:31,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552074246] [2021-11-13 18:48:31,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:31,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 18:48:31,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:31,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 18:48:31,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:48:31,400 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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) [2021-11-13 18:48:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:32,032 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-11-13 18:48:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:48:32,034 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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 25 [2021-11-13 18:48:32,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:32,035 INFO L225 Difference]: With dead ends: 51 [2021-11-13 18:48:32,035 INFO L226 Difference]: Without dead ends: 32 [2021-11-13 18:48:32,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:48:32,037 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 92 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.90ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 195.11ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:32,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 54 Invalid, 186 Unknown, 0 Unchecked, 2.90ms Time], IncrementalHoareTripleChecker [33 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 195.11ms Time] [2021-11-13 18:48:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-13 18:48:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-11-13 18:48:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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) [2021-11-13 18:48:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-11-13 18:48:32,044 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 25 [2021-11-13 18:48:32,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:32,044 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-11-13 18:48:32,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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) [2021-11-13 18:48:32,045 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-11-13 18:48:32,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 18:48:32,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:32,045 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:32,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:48:32,046 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:32,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:32,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1364926572, now seen corresponding path program 1 times [2021-11-13 18:48:32,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:32,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844910219] [2021-11-13 18:48:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:32,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:32,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:32,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844910219] [2021-11-13 18:48:32,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844910219] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:48:32,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818365874] [2021-11-13 18:48:32,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:32,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:48:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:48:32,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:48:32,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:48:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:32,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-13 18:48:32,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:48:33,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:48:33,112 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:48:33,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-13 18:48:33,355 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-13 18:48:33,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-11-13 18:48:33,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:48:33,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 42 treesize of output 27 [2021-11-13 18:48:33,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:48:33,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-13 18:48:33,618 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-13 18:48:33,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2021-11-13 18:48:33,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:48:33,929 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-13 18:48:33,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2021-11-13 18:48:34,187 INFO L354 Elim1Store]: treesize reduction 223, result has 11.9 percent of original size [2021-11-13 18:48:34,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 113 [2021-11-13 18:48:34,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:48:34,223 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-11-13 18:48:34,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 73 [2021-11-13 18:48:34,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:48:34,252 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-11-13 18:48:34,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 74 [2021-11-13 18:48:34,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:48:34,458 INFO L354 Elim1Store]: treesize reduction 54, result has 34.9 percent of original size [2021-11-13 18:48:34,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 127 [2021-11-13 18:48:34,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:48:34,503 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-13 18:48:34,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 131 [2021-11-13 18:48:34,524 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-11-13 18:48:34,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 112 [2021-11-13 18:48:34,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:48:34,847 INFO L354 Elim1Store]: treesize reduction 198, result has 15.0 percent of original size [2021-11-13 18:48:34,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 198 treesize of output 169 [2021-11-13 18:48:34,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:48:34,905 INFO L354 Elim1Store]: treesize reduction 198, result has 15.0 percent of original size [2021-11-13 18:48:34,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 208 treesize of output 191 [2021-11-13 18:48:34,923 INFO L354 Elim1Store]: treesize reduction 51, result has 20.3 percent of original size [2021-11-13 18:48:34,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 156 [2021-11-13 18:48:35,286 INFO L354 Elim1Store]: treesize reduction 288, result has 12.5 percent of original size [2021-11-13 18:48:35,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 195 treesize of output 172 [2021-11-13 18:48:35,307 INFO L354 Elim1Store]: treesize reduction 51, result has 25.0 percent of original size [2021-11-13 18:48:35,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 215 [2021-11-13 18:48:35,375 INFO L354 Elim1Store]: treesize reduction 376, result has 13.2 percent of original size [2021-11-13 18:48:35,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 212 treesize of output 201 [2021-11-13 18:48:36,196 INFO L354 Elim1Store]: treesize reduction 122, result has 18.1 percent of original size [2021-11-13 18:48:36,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 274 treesize of output 165 [2021-11-13 18:48:36,214 INFO L354 Elim1Store]: treesize reduction 124, result has 0.8 percent of original size [2021-11-13 18:48:36,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 138 treesize of output 80 [2021-11-13 18:48:36,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-13 18:48:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:36,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:48:38,946 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int) (|v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7| Int)) (= (let ((.cse4 (+ |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7| 4))) (let ((.cse12 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_#res#1.base|) .cse4 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res#1.base|) .cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse2 (select (select .cse10 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (.cse3 (+ 8 (select (select .cse12 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (let ((.cse8 (let ((.cse11 (store .cse12 .cse2 (store (select .cse12 .cse2) .cse3 |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7|)))) (store .cse11 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse11 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7|)))) (.cse5 (let ((.cse9 (store .cse10 .cse2 (store (select .cse10 .cse2) .cse3 |c_ULTIMATE.start_node_create_#res#1.base|)))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_#res#1.base|))))) (let ((.cse6 (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse7 (+ (select (select .cse8 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_#res#1.base|) .cse4 v_DerPreprocessor_5)))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 v_DerPreprocessor_4))))) (store .cse0 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_DerPreprocessor_3))) (select (select .cse5 .cse6) .cse7)) (select (select .cse8 .cse6) .cse7))))))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-13 18:48:41,040 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_node_create_~temp~0#1.offset| Int) (v_DerPreprocessor_9 Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (|ULTIMATE.start_node_create_~data#1| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int) (|v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7| Int)) (= (let ((.cse6 (+ |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7| 4)) (.cse4 (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 4)) (.cse5 (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 8))) (let ((.cse14 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse16 (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 0) .cse5 0) |ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_9))) (store .cse16 .cse6 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse16) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse15 (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 0) .cse5 0) |ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_8))) (store .cse15 .cse6 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse15) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))))) (let ((.cse2 (select (select .cse12 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (.cse3 (+ (select (select .cse14 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) 8))) (let ((.cse10 (let ((.cse13 (store .cse14 .cse2 (store (select .cse14 .cse2) .cse3 |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7|)))) (store .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_7|)))) (.cse7 (let ((.cse11 (store .cse12 .cse2 (store (select .cse12 .cse2) .cse3 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse11 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse11 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse9 (+ (select (select .cse10 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 v_DerPreprocessor_7) .cse5 v_DerPreprocessor_6) |ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_~data#1|) .cse6 v_DerPreprocessor_5)))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 v_DerPreprocessor_4))))) (store .cse0 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_DerPreprocessor_3))) (select (select .cse7 .cse8) .cse9)) (select (select .cse10 .cse8) .cse9))))))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-13 18:48:41,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 265636 treesize of output 263264 [2021-11-13 18:48:41,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63782638 treesize of output 63147498 [2021-11-13 18:49:31,351 WARN L227 SmtUtils]: Spent 49.42s on a formula simplification that was a NOOP. DAG size: 2377 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-13 18:50:21,218 WARN L227 SmtUtils]: Spent 49.85s on a formula simplification that was a NOOP. DAG size: 2374 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-13 18:50:21,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-13 18:50:21,413 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:50:21,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-13 18:50:21,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383852155] [2021-11-13 18:50:21,414 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:50:21,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:50:21,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:50:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:50:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1367, Unknown=2, NotChecked=150, Total=1640 [2021-11-13 18:50:21,416 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-11-13 18:50:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:22,829 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-11-13 18:50:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 18:50:22,830 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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 25 [2021-11-13 18:50:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:22,831 INFO L225 Difference]: With dead ends: 35 [2021-11-13 18:50:22,831 INFO L226 Difference]: Without dead ends: 33 [2021-11-13 18:50:22,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=274, Invalid=2488, Unknown=2, NotChecked=206, Total=2970 [2021-11-13 18:50:22,835 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 61 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 346.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.53ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 393.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:22,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 64 Invalid, 340 Unknown, 0 Unchecked, 3.53ms Time], IncrementalHoareTripleChecker [38 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 393.52ms Time] [2021-11-13 18:50:22,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-13 18:50:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-11-13 18:50:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 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) [2021-11-13 18:50:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-11-13 18:50:22,842 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2021-11-13 18:50:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:22,843 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-11-13 18:50:22,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-11-13 18:50:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-11-13 18:50:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 18:50:22,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:22,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:22,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:50:23,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:50:23,052 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:23,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1729377051, now seen corresponding path program 1 times [2021-11-13 18:50:23,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:50:23,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745446064] [2021-11-13 18:50:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:23,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:50:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:23,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:50:23,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745446064] [2021-11-13 18:50:23,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745446064] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:50:23,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702460633] [2021-11-13 18:50:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:23,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:50:23,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:50:23,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:50:23,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:50:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:23,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-13 18:50:23,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:50:23,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:50:23,902 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:50:23,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-13 18:50:24,091 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-13 18:50:24,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-11-13 18:50:24,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:24,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-13 18:50:24,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:24,345 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-13 18:50:24,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 47 [2021-11-13 18:50:24,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_dll_create_~head~0#1.offset|] [2021-11-13 18:50:24,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:50:24,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-13 18:50:24,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70372970] [2021-11-13 18:50:24,455 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:50:24,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 18:50:24,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:50:24,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 18:50:24,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-11-13 18:50:24,457 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 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) [2021-11-13 18:50:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:25,710 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-11-13 18:50:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 18:50:25,714 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 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 27 [2021-11-13 18:50:25,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:25,715 INFO L225 Difference]: With dead ends: 40 [2021-11-13 18:50:25,715 INFO L226 Difference]: Without dead ends: 37 [2021-11-13 18:50:25,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=237, Invalid=1403, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 18:50:25,717 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 89 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 347.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.05ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 422.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:25,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 96 Invalid, 411 Unknown, 0 Unchecked, 4.05ms Time], IncrementalHoareTripleChecker [53 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 422.74ms Time] [2021-11-13 18:50:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-13 18:50:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-11-13 18:50:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 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) [2021-11-13 18:50:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-13 18:50:25,723 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2021-11-13 18:50:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:25,724 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-13 18:50:25,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 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) [2021-11-13 18:50:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-13 18:50:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 18:50:25,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:25,725 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:25,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-13 18:50:25,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-13 18:50:25,936 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:25,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1729375377, now seen corresponding path program 1 times [2021-11-13 18:50:25,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:50:25,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237236040] [2021-11-13 18:50:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:25,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:50:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:26,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:50:26,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237236040] [2021-11-13 18:50:26,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237236040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:50:26,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349023002] [2021-11-13 18:50:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:26,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:50:26,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:50:26,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:50:26,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f050239b-0414-4b13-97d1-c66992d32ac8/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:50:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:26,859 WARN L261 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-13 18:50:26,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:50:26,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:50:26,975 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:50:26,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-13 18:50:27,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:27,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 27 [2021-11-13 18:50:27,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:27,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-13 18:50:27,343 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-13 18:50:27,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-11-13 18:50:27,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:27,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2021-11-13 18:50:27,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:27,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2021-11-13 18:50:27,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:27,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-13 18:50:27,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:27,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-13 18:50:27,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:27,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:50:27,733 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-13 18:50:27,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 103 [2021-11-13 18:50:27,743 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-13 18:50:27,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 121 [2021-11-13 18:50:27,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:27,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:50:27,760 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-13 18:50:27,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 111 [2021-11-13 18:50:28,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:28,461 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-13 18:50:28,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 33 [2021-11-13 18:50:28,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:28,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:28,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:28,769 INFO L354 Elim1Store]: treesize reduction 56, result has 28.2 percent of original size [2021-11-13 18:50:28,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 240 treesize of output 179 [2021-11-13 18:50:28,803 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-11-13 18:50:28,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 224 [2021-11-13 18:50:28,817 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-11-13 18:50:28,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 209 [2021-11-13 18:50:28,845 INFO L354 Elim1Store]: treesize reduction 88, result has 23.5 percent of original size [2021-11-13 18:50:28,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 205 [2021-11-13 18:50:28,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:28,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:28,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:28,882 INFO L354 Elim1Store]: treesize reduction 116, result has 24.7 percent of original size [2021-11-13 18:50:28,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 192 treesize of output 197 [2021-11-13 18:50:29,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:50:29,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,171 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-13 18:50:29,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 238 treesize of output 241 [2021-11-13 18:50:29,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:50:29,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,192 INFO L354 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2021-11-13 18:50:29,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 227 treesize of output 164 [2021-11-13 18:50:29,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,205 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-13 18:50:29,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 244 treesize of output 231 [2021-11-13 18:50:29,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:50:29,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,475 INFO L354 Elim1Store]: treesize reduction 261, result has 12.7 percent of original size [2021-11-13 18:50:29,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 304 treesize of output 194 [2021-11-13 18:50:29,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:50:29,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:50:29,547 INFO L354 Elim1Store]: treesize reduction 307, result has 15.0 percent of original size [2021-11-13 18:50:29,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 295 treesize of output 273 [2021-11-13 18:50:29,558 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-13 18:50:29,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 244 treesize of output 217 [2021-11-13 18:50:29,797 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-13 18:50:29,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 207 treesize of output 160 [2021-11-13 18:50:29,817 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-13 18:50:29,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 176 treesize of output 183 [2021-11-13 18:50:29,839 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-13 18:50:29,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 165 treesize of output 156 [2021-11-13 18:50:32,667 INFO L354 Elim1Store]: treesize reduction 216, result has 6.5 percent of original size [2021-11-13 18:50:32,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 28 case distinctions, treesize of input 224 treesize of output 149 [2021-11-13 18:50:32,713 INFO L354 Elim1Store]: treesize reduction 166, result has 4.0 percent of original size [2021-11-13 18:50:32,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 77 [2021-11-13 18:50:32,891 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:50:32,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-11-13 18:50:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:32,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:50:36,965 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (v_DerPreprocessor_11 Int) (v_DerPreprocessor_12 Int) (v_DerPreprocessor_15 Int) (v_DerPreprocessor_16 Int) (|ULTIMATE.start_node_create_~data#1| Int) (v_DerPreprocessor_10 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse4 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4)) (.cse5 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 8))) (let ((.cse15 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse17 (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 0) .cse5 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_16))) (store .cse17 .cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse17) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (.cse13 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse16 (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 0) .cse5 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_15))) (store .cse16 .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse16) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))))) (let ((.cse2 (select (select .cse13 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (.cse3 (+ 8 (select (select .cse15 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (let ((.cse9 (let ((.cse14 (store .cse15 .cse2 (store (select .cse15 .cse2) .cse3 |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (store .cse14 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse14 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (.cse6 (let ((.cse12 (store .cse13 .cse2 (store (select .cse13 .cse2) .cse3 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse12 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse12 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse10 (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse11 (+ (select (select .cse9 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse7 (select (select .cse6 .cse10) .cse11)) (.cse8 (+ (select (select .cse9 .cse10) .cse11) 4))) (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 v_DerPreprocessor_14) .cse5 v_DerPreprocessor_13) |c_ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_~data#1|) .cse4 v_DerPreprocessor_12)))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 v_DerPreprocessor_11))))) (store .cse0 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_DerPreprocessor_10))) (select (select .cse6 .cse7) .cse8)) (select (select .cse9 .cse7) .cse8)))))))))) is different from false