./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 5eef0a1d7c251abc753eabb723fe850489bfd10ab147ced1a31e6821eaf88c98 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 05:36:44,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 05:36:44,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 05:36:44,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 05:36:44,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 05:36:44,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 05:36:44,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 05:36:44,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 05:36:44,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 05:36:44,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 05:36:44,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 05:36:44,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 05:36:44,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 05:36:44,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 05:36:44,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 05:36:44,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 05:36:44,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 05:36:44,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 05:36:44,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 05:36:44,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 05:36:44,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 05:36:44,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 05:36:44,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 05:36:44,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 05:36:44,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 05:36:44,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 05:36:44,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 05:36:44,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 05:36:44,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 05:36:44,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 05:36:44,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 05:36:44,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 05:36:44,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 05:36:44,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 05:36:44,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 05:36:44,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 05:36:44,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 05:36:44,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 05:36:44,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 05:36:44,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 05:36:44,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 05:36:44,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 05:36:44,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 05:36:44,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 05:36:44,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 05:36:44,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 05:36:44,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 05:36:44,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 05:36:44,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 05:36:44,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 05:36:44,291 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 05:36:44,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 05:36:44,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 05:36:44,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 05:36:44,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 05:36:44,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 05:36:44,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 05:36:44,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 05:36:44,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 05:36:44,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 05:36:44,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 05:36:44,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 05:36:44,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 05:36:44,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 05:36:44,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 05:36:44,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 05:36:44,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:36:44,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 05:36:44,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 05:36:44,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 05:36:44,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 05:36:44,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 05:36:44,295 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 05:36:44,295 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 05:36:44,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 05:36:44,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 05:36:44,296 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eef0a1d7c251abc753eabb723fe850489bfd10ab147ced1a31e6821eaf88c98 [2021-12-16 05:36:44,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 05:36:44,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 05:36:44,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 05:36:44,547 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 05:36:44,547 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 05:36:44,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i [2021-12-16 05:36:44,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a23665b2/79323cdc1842473bb20b3c505a23b957/FLAG11d42d19b [2021-12-16 05:36:45,073 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 05:36:45,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i [2021-12-16 05:36:45,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a23665b2/79323cdc1842473bb20b3c505a23b957/FLAG11d42d19b [2021-12-16 05:36:45,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a23665b2/79323cdc1842473bb20b3c505a23b957 [2021-12-16 05:36:45,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 05:36:45,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 05:36:45,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 05:36:45,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 05:36:45,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 05:36:45,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6288e3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45, skipping insertion in model container [2021-12-16 05:36:45,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 05:36:45,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 05:36:45,466 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[33021,33034] [2021-12-16 05:36:45,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[45234,45247] [2021-12-16 05:36:45,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:36:45,584 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 05:36:45,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[33021,33034] [2021-12-16 05:36:45,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[45234,45247] [2021-12-16 05:36:45,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:36:45,656 INFO L208 MainTranslator]: Completed translation [2021-12-16 05:36:45,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45 WrapperNode [2021-12-16 05:36:45,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 05:36:45,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 05:36:45,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 05:36:45,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 05:36:45,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,752 INFO L137 Inliner]: procedures = 177, calls = 297, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 996 [2021-12-16 05:36:45,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 05:36:45,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 05:36:45,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 05:36:45,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 05:36:45,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 05:36:45,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 05:36:45,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 05:36:45,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 05:36:45,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (1/1) ... [2021-12-16 05:36:45,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:36:45,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:36:45,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 05:36:45,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 05:36:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 05:36:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 05:36:45,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 05:36:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 05:36:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 05:36:45,954 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 05:36:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-12-16 05:36:45,955 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-12-16 05:36:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 05:36:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 05:36:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 05:36:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 05:36:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 05:36:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 05:36:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 05:36:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 05:36:45,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 05:36:45,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 05:36:46,164 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 05:36:46,165 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 05:36:46,788 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 05:36:46,797 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 05:36:46,798 INFO L301 CfgBuilder]: Removed 62 assume(true) statements. [2021-12-16 05:36:46,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:36:46 BoogieIcfgContainer [2021-12-16 05:36:46,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 05:36:46,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 05:36:46,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 05:36:46,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 05:36:46,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:36:45" (1/3) ... [2021-12-16 05:36:46,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf1a732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:36:46, skipping insertion in model container [2021-12-16 05:36:46,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:36:45" (2/3) ... [2021-12-16 05:36:46,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf1a732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:36:46, skipping insertion in model container [2021-12-16 05:36:46,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:36:46" (3/3) ... [2021-12-16 05:36:46,807 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test8-1.i [2021-12-16 05:36:46,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 05:36:46,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 05:36:46,859 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 05:36:46,876 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 [2021-12-16 05:36:46,877 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 05:36:46,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 200 states have (on average 1.695) internal successors, (339), 217 states have internal predecessors, (339), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-16 05:36:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 05:36:46,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:36:46,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:36:46,906 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:36:46,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:36:46,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2021-12-16 05:36:46,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:36:46,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441414445] [2021-12-16 05:36:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:46,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:36:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:36:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:36:47,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:36:47,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441414445] [2021-12-16 05:36:47,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441414445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:36:47,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:36:47,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:36:47,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438906722] [2021-12-16 05:36:47,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:36:47,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 05:36:47,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:36:47,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 05:36:47,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 05:36:47,079 INFO L87 Difference]: Start difference. First operand has 226 states, 200 states have (on average 1.695) internal successors, (339), 217 states have internal predecessors, (339), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-16 05:36:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:36:47,139 INFO L93 Difference]: Finished difference Result 450 states and 773 transitions. [2021-12-16 05:36:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 05:36:47,141 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-12-16 05:36:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:36:47,157 INFO L225 Difference]: With dead ends: 450 [2021-12-16 05:36:47,157 INFO L226 Difference]: Without dead ends: 222 [2021-12-16 05:36:47,164 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 [2021-12-16 05:36:47,168 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:36:47,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:36:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-16 05:36:47,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-12-16 05:36:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 213 states have internal predecessors, (267), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-16 05:36:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-12-16 05:36:47,259 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2021-12-16 05:36:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:36:47,259 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-12-16 05:36:47,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-16 05:36:47,260 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-12-16 05:36:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 05:36:47,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:36:47,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:36:47,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 05:36:47,264 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:36:47,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:36:47,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2021-12-16 05:36:47,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:36:47,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199080632] [2021-12-16 05:36:47,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:47,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:36:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:36:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:36:47,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:36:47,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199080632] [2021-12-16 05:36:47,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199080632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:36:47,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:36:47,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:36:47,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803261092] [2021-12-16 05:36:47,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:36:47,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:36:47,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:36:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:36:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:36:47,371 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-12-16 05:36:47,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:36:47,609 INFO L93 Difference]: Finished difference Result 463 states and 642 transitions. [2021-12-16 05:36:47,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:36:47,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-12-16 05:36:47,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:36:47,611 INFO L225 Difference]: With dead ends: 463 [2021-12-16 05:36:47,611 INFO L226 Difference]: Without dead ends: 338 [2021-12-16 05:36:47,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:36:47,613 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 143 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:36:47,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 778 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:36:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-12-16 05:36:47,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 224. [2021-12-16 05:36:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 199 states have (on average 1.3517587939698492) internal successors, (269), 215 states have internal predecessors, (269), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-16 05:36:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 309 transitions. [2021-12-16 05:36:47,623 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 309 transitions. Word has length 44 [2021-12-16 05:36:47,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:36:47,624 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 309 transitions. [2021-12-16 05:36:47,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-12-16 05:36:47,624 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 309 transitions. [2021-12-16 05:36:47,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-16 05:36:47,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:36:47,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:36:47,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 05:36:47,626 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:36:47,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:36:47,626 INFO L85 PathProgramCache]: Analyzing trace with hash 385113170, now seen corresponding path program 1 times [2021-12-16 05:36:47,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:36:47,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179055151] [2021-12-16 05:36:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:47,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:36:47,754 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:36:47,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284680306] [2021-12-16 05:36:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:47,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:36:47,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:36:47,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:36:47,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 05:36:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:36:48,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 05:36:48,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:36:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:36:48,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:36:48,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:36:48,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179055151] [2021-12-16 05:36:48,357 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 05:36:48,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284680306] [2021-12-16 05:36:48,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284680306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:36:48,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:36:48,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:36:48,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785772746] [2021-12-16 05:36:48,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:36:48,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:36:48,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:36:48,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:36:48,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:36:48,359 INFO L87 Difference]: Start difference. First operand 224 states and 309 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 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) [2021-12-16 05:36:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:36:48,418 INFO L93 Difference]: Finished difference Result 465 states and 645 transitions. [2021-12-16 05:36:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:36:48,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 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) Word has length 61 [2021-12-16 05:36:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:36:48,420 INFO L225 Difference]: With dead ends: 465 [2021-12-16 05:36:48,420 INFO L226 Difference]: Without dead ends: 245 [2021-12-16 05:36:48,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:36:48,422 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 9 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:36:48,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 559 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:36:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-12-16 05:36:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2021-12-16 05:36:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 219 states have (on average 1.3196347031963471) internal successors, (289), 235 states have internal predecessors, (289), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-16 05:36:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 329 transitions. [2021-12-16 05:36:48,435 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 329 transitions. Word has length 61 [2021-12-16 05:36:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:36:48,435 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 329 transitions. [2021-12-16 05:36:48,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 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) [2021-12-16 05:36:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 329 transitions. [2021-12-16 05:36:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-16 05:36:48,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:36:48,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:36:48,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 05:36:48,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:36:48,653 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:36:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:36:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1817919146, now seen corresponding path program 1 times [2021-12-16 05:36:48,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:36:48,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987294282] [2021-12-16 05:36:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:48,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:36:48,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:36:48,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470328518] [2021-12-16 05:36:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:48,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:36:48,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:36:48,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:36:48,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 05:36:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:36:49,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1555 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 05:36:49,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:36:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:36:49,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:36:49,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:36:49,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987294282] [2021-12-16 05:36:49,426 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 05:36:49,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470328518] [2021-12-16 05:36:49,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470328518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:36:49,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:36:49,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:36:49,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77874768] [2021-12-16 05:36:49,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:36:49,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:36:49,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:36:49,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:36:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:36:49,429 INFO L87 Difference]: Start difference. First operand 244 states and 329 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 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) [2021-12-16 05:36:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:36:49,493 INFO L93 Difference]: Finished difference Result 476 states and 646 transitions. [2021-12-16 05:36:49,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:36:49,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 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) Word has length 61 [2021-12-16 05:36:49,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:36:49,497 INFO L225 Difference]: With dead ends: 476 [2021-12-16 05:36:49,497 INFO L226 Difference]: Without dead ends: 236 [2021-12-16 05:36:49,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:36:49,499 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 213 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:36:49,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 647 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:36:49,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-16 05:36:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2021-12-16 05:36:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 205 states have (on average 1.3073170731707318) internal successors, (268), 221 states have internal predecessors, (268), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-16 05:36:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 308 transitions. [2021-12-16 05:36:49,506 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 308 transitions. Word has length 61 [2021-12-16 05:36:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:36:49,506 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 308 transitions. [2021-12-16 05:36:49,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 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) [2021-12-16 05:36:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 308 transitions. [2021-12-16 05:36:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-16 05:36:49,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:36:49,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:36:49,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 05:36:49,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-16 05:36:49,728 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:36:49,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:36:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1660994696, now seen corresponding path program 1 times [2021-12-16 05:36:49,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:36:49,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35336215] [2021-12-16 05:36:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:49,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:36:49,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:36:49,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704642101] [2021-12-16 05:36:49,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:49,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:36:49,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:36:49,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:36:49,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 05:36:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:36:50,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 05:36:50,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:36:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:36:50,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:36:50,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:36:50,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35336215] [2021-12-16 05:36:50,567 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 05:36:50,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704642101] [2021-12-16 05:36:50,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704642101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:36:50,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:36:50,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:36:50,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695433038] [2021-12-16 05:36:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:36:50,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:36:50,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:36:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:36:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:36:50,569 INFO L87 Difference]: Start difference. First operand 230 states and 308 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 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) [2021-12-16 05:36:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:36:50,625 INFO L93 Difference]: Finished difference Result 567 states and 751 transitions. [2021-12-16 05:36:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:36:50,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 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) Word has length 61 [2021-12-16 05:36:50,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:36:50,627 INFO L225 Difference]: With dead ends: 567 [2021-12-16 05:36:50,627 INFO L226 Difference]: Without dead ends: 341 [2021-12-16 05:36:50,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:36:50,628 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 98 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:36:50,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 616 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:36:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-16 05:36:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 338. [2021-12-16 05:36:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 312 states have (on average 1.2852564102564104) internal successors, (401), 328 states have internal predecessors, (401), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-16 05:36:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 443 transitions. [2021-12-16 05:36:50,636 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 443 transitions. Word has length 61 [2021-12-16 05:36:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:36:50,636 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 443 transitions. [2021-12-16 05:36:50,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 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) [2021-12-16 05:36:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 443 transitions. [2021-12-16 05:36:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-16 05:36:50,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:36:50,638 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:36:50,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-16 05:36:50,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:36:50,857 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:36:50,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:36:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash -999436228, now seen corresponding path program 1 times [2021-12-16 05:36:50,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:36:50,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100773123] [2021-12-16 05:36:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:50,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:36:50,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:36:50,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900843639] [2021-12-16 05:36:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:50,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:36:50,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:36:50,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:36:50,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 05:36:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:36:51,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 05:36:51,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:36:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:36:51,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:36:51,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:36:51,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100773123] [2021-12-16 05:36:51,549 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 05:36:51,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900843639] [2021-12-16 05:36:51,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900843639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:36:51,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:36:51,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:36:51,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586832626] [2021-12-16 05:36:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:36:51,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:36:51,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:36:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:36:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:36:51,551 INFO L87 Difference]: Start difference. First operand 338 states and 443 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:36:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:36:51,586 INFO L93 Difference]: Finished difference Result 631 states and 839 transitions. [2021-12-16 05:36:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:36:51,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2021-12-16 05:36:51,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:36:51,589 INFO L225 Difference]: With dead ends: 631 [2021-12-16 05:36:51,589 INFO L226 Difference]: Without dead ends: 341 [2021-12-16 05:36:51,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:36:51,591 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 2 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:36:51,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 887 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:36:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-16 05:36:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-12-16 05:36:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 314 states have (on average 1.286624203821656) internal successors, (404), 331 states have internal predecessors, (404), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-16 05:36:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 447 transitions. [2021-12-16 05:36:51,604 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 447 transitions. Word has length 76 [2021-12-16 05:36:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:36:51,604 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 447 transitions. [2021-12-16 05:36:51,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:36:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 447 transitions. [2021-12-16 05:36:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-16 05:36:51,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:36:51,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:36:51,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 05:36:51,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:36:51,820 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:36:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:36:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1611628322, now seen corresponding path program 1 times [2021-12-16 05:36:51,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:36:51,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267851528] [2021-12-16 05:36:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:51,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:36:51,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:36:51,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904861701] [2021-12-16 05:36:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:51,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:36:51,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:36:51,859 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:36:51,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 05:36:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:36:52,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 05:36:52,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:36:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:36:52,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:36:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 05:36:52,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:36:52,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267851528] [2021-12-16 05:36:52,999 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 05:36:52,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904861701] [2021-12-16 05:36:52,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904861701] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:36:52,999 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 05:36:52,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-16 05:36:52,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683020243] [2021-12-16 05:36:53,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 05:36:53,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 05:36:53,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:36:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 05:36:53,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 05:36:53,001 INFO L87 Difference]: Start difference. First operand 341 states and 447 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 05:36:53,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:36:53,126 INFO L93 Difference]: Finished difference Result 645 states and 860 transitions. [2021-12-16 05:36:53,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 05:36:53,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2021-12-16 05:36:53,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:36:53,128 INFO L225 Difference]: With dead ends: 645 [2021-12-16 05:36:53,128 INFO L226 Difference]: Without dead ends: 350 [2021-12-16 05:36:53,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-16 05:36:53,130 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 12 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:36:53,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1466 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:36:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-16 05:36:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-12-16 05:36:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 322 states have (on average 1.2919254658385093) internal successors, (416), 339 states have internal predecessors, (416), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-16 05:36:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 459 transitions. [2021-12-16 05:36:53,140 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 459 transitions. Word has length 78 [2021-12-16 05:36:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:36:53,140 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 459 transitions. [2021-12-16 05:36:53,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 05:36:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 459 transitions. [2021-12-16 05:36:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-16 05:36:53,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:36:53,142 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:36:53,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 05:36:53,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:36:53,354 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:36:53,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:36:53,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1177569788, now seen corresponding path program 2 times [2021-12-16 05:36:53,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:36:53,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466831020] [2021-12-16 05:36:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:36:53,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:36:53,386 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:36:53,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310367382] [2021-12-16 05:36:53,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 05:36:53,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:36:53,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:36:53,388 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:36:53,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process