./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_FNV_test7-2.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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 16:03:35,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 16:03:35,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 16:03:35,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 16:03:35,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 16:03:35,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 16:03:35,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 16:03:35,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 16:03:35,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 16:03:35,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 16:03:35,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 16:03:35,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 16:03:35,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 16:03:35,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 16:03:35,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 16:03:35,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 16:03:35,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 16:03:35,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 16:03:35,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 16:03:35,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 16:03:35,318 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 16:03:35,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 16:03:35,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 16:03:35,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 16:03:35,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 16:03:35,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 16:03:35,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 16:03:35,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 16:03:35,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 16:03:35,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 16:03:35,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 16:03:35,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 16:03:35,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 16:03:35,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 16:03:35,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 16:03:35,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 16:03:35,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 16:03:35,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 16:03:35,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 16:03:35,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 16:03:35,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 16:03:35,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 16:03:35,334 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 16:03:35,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 16:03:35,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 16:03:35,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 16:03:35,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 16:03:35,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 16:03:35,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 16:03:35,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 16:03:35,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 16:03:35,351 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 16:03:35,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 16:03:35,351 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 16:03:35,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 16:03:35,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 16:03:35,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 16:03:35,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 16:03:35,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 16:03:35,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 16:03:35,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 16:03:35,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 16:03:35,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 16:03:35,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 16:03:35,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 16:03:35,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 16:03:35,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 16:03:35,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:03:35,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 16:03:35,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 16:03:35,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 16:03:35,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 16:03:35,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 16:03:35,355 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 16:03:35,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 16:03:35,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 16:03:35,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2022-07-21 16:03:35,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 16:03:35,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 16:03:35,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 16:03:35,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 16:03:35,706 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 16:03:35,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2022-07-21 16:03:35,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d5ce914/ef0068220c694c528bf7d7152759e879/FLAG3af0a33a8 [2022-07-21 16:03:36,272 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 16:03:36,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2022-07-21 16:03:36,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d5ce914/ef0068220c694c528bf7d7152759e879/FLAG3af0a33a8 [2022-07-21 16:03:36,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d5ce914/ef0068220c694c528bf7d7152759e879 [2022-07-21 16:03:36,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 16:03:36,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 16:03:36,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 16:03:36,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 16:03:36,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 16:03:36,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:03:36" (1/1) ... [2022-07-21 16:03:36,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30df89db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:36, skipping insertion in model container [2022-07-21 16:03:36,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:03:36" (1/1) ... [2022-07-21 16:03:36,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 16:03:36,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 16:03:37,102 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_FNV_test7-2.i[33021,33034] [2022-07-21 16:03:37,206 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_FNV_test7-2.i[44124,44137] [2022-07-21 16:03:37,211 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_FNV_test7-2.i[44245,44258] [2022-07-21 16:03:37,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:03:37,238 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 16:03:37,255 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_FNV_test7-2.i[33021,33034] [2022-07-21 16:03:37,314 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_FNV_test7-2.i[44124,44137] [2022-07-21 16:03:37,315 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_FNV_test7-2.i[44245,44258] [2022-07-21 16:03:37,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:03:37,369 INFO L208 MainTranslator]: Completed translation [2022-07-21 16:03:37,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37 WrapperNode [2022-07-21 16:03:37,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 16:03:37,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 16:03:37,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 16:03:37,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 16:03:37,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (1/1) ... [2022-07-21 16:03:37,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (1/1) ... [2022-07-21 16:03:37,459 INFO L137 Inliner]: procedures = 176, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2022-07-21 16:03:37,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 16:03:37,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 16:03:37,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 16:03:37,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 16:03:37,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (1/1) ... [2022-07-21 16:03:37,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (1/1) ... [2022-07-21 16:03:37,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (1/1) ... [2022-07-21 16:03:37,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (1/1) ... [2022-07-21 16:03:37,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (1/1) ... [2022-07-21 16:03:37,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (1/1) ... [2022-07-21 16:03:37,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (1/1) ... [2022-07-21 16:03:37,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 16:03:37,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 16:03:37,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 16:03:37,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 16:03:37,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (1/1) ... [2022-07-21 16:03:37,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:03:37,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:03:37,617 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) [2022-07-21 16:03:37,623 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 [2022-07-21 16:03:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 16:03:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 16:03:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 16:03:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 16:03:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 16:03:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 16:03:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 16:03:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 16:03:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-21 16:03:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 16:03:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 16:03:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 16:03:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 16:03:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 16:03:37,835 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 16:03:37,836 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 16:03:38,807 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 16:03:38,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 16:03:38,813 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2022-07-21 16:03:38,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:03:38 BoogieIcfgContainer [2022-07-21 16:03:38,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 16:03:38,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 16:03:38,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 16:03:38,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 16:03:38,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:03:36" (1/3) ... [2022-07-21 16:03:38,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4666624f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:03:38, skipping insertion in model container [2022-07-21 16:03:38,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:03:37" (2/3) ... [2022-07-21 16:03:38,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4666624f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:03:38, skipping insertion in model container [2022-07-21 16:03:38,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:03:38" (3/3) ... [2022-07-21 16:03:38,821 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-2.i [2022-07-21 16:03:38,830 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 16:03:38,830 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 16:03:38,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 16:03:38,870 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43929e5e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a28e1eb [2022-07-21 16:03:38,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 16:03:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 208 states have (on average 1.6971153846153846) internal successors, (353), 210 states have internal predecessors, (353), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 16:03:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 16:03:38,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:03:38,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:03:38,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:03:38,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:03:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2094566776, now seen corresponding path program 1 times [2022-07-21 16:03:38,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:03:38,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836140792] [2022-07-21 16:03:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:38,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:03:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:03:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:03:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:03:38,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836140792] [2022-07-21 16:03:38,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836140792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:03:38,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:03:38,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 16:03:38,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883344191] [2022-07-21 16:03:38,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:03:38,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 16:03:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:03:39,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 16:03:39,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 16:03:39,006 INFO L87 Difference]: Start difference. First operand has 215 states, 208 states have (on average 1.6971153846153846) internal successors, (353), 210 states have internal predecessors, (353), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:03:39,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:03:39,059 INFO L93 Difference]: Finished difference Result 427 states and 715 transitions. [2022-07-21 16:03:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 16:03:39,061 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-07-21 16:03:39,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:03:39,067 INFO L225 Difference]: With dead ends: 427 [2022-07-21 16:03:39,067 INFO L226 Difference]: Without dead ends: 181 [2022-07-21 16:03:39,070 INFO L412 NwaCegarLoop]: 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 [2022-07-21 16:03:39,072 INFO L413 NwaCegarLoop]: 280 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, 280 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:03:39,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:03:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-21 16:03:39,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-07-21 16:03:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 175 states have (on average 1.3142857142857143) internal successors, (230), 176 states have internal predecessors, (230), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 16:03:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 236 transitions. [2022-07-21 16:03:39,107 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 236 transitions. Word has length 8 [2022-07-21 16:03:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:03:39,107 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 236 transitions. [2022-07-21 16:03:39,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:03:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 236 transitions. [2022-07-21 16:03:39,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 16:03:39,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:03:39,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:03:39,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 16:03:39,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:03:39,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:03:39,110 INFO L85 PathProgramCache]: Analyzing trace with hash -716312389, now seen corresponding path program 1 times [2022-07-21 16:03:39,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:03:39,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301985230] [2022-07-21 16:03:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:39,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:03:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:03:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:03:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:03:39,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301985230] [2022-07-21 16:03:39,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301985230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:03:39,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:03:39,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:03:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072989294] [2022-07-21 16:03:39,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:03:39,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:03:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:03:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:03:39,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:03:39,159 INFO L87 Difference]: Start difference. First operand 181 states and 236 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:03:39,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:03:39,423 INFO L93 Difference]: Finished difference Result 386 states and 505 transitions. [2022-07-21 16:03:39,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:03:39,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-07-21 16:03:39,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:03:39,426 INFO L225 Difference]: With dead ends: 386 [2022-07-21 16:03:39,426 INFO L226 Difference]: Without dead ends: 299 [2022-07-21 16:03:39,426 INFO L412 NwaCegarLoop]: 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 [2022-07-21 16:03:39,427 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 146 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:03:39,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 570 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:03:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-21 16:03:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 183. [2022-07-21 16:03:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 177 states have (on average 1.310734463276836) internal successors, (232), 178 states have internal predecessors, (232), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 16:03:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 238 transitions. [2022-07-21 16:03:39,450 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 238 transitions. Word has length 10 [2022-07-21 16:03:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:03:39,450 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 238 transitions. [2022-07-21 16:03:39,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:03:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 238 transitions. [2022-07-21 16:03:39,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 16:03:39,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:03:39,452 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 16:03:39,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 16:03:39,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:03:39,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:03:39,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1437380185, now seen corresponding path program 1 times [2022-07-21 16:03:39,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:03:39,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588582968] [2022-07-21 16:03:39,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:39,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:03:39,556 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:03:39,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332176189] [2022-07-21 16:03:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:39,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:39,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:03:39,558 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) [2022-07-21 16:03:39,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 16:03:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:03:40,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 1571 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 16:03:40,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:03:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:03:40,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:03:40,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:03:40,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588582968] [2022-07-21 16:03:40,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:03:40,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332176189] [2022-07-21 16:03:40,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332176189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:03:40,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:03:40,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:03:40,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225899976] [2022-07-21 16:03:40,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:03:40,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:03:40,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:03:40,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:03:40,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:03:40,069 INFO L87 Difference]: Start difference. First operand 183 states and 238 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:03:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:03:40,117 INFO L93 Difference]: Finished difference Result 383 states and 503 transitions. [2022-07-21 16:03:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:03:40,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-07-21 16:03:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:03:40,118 INFO L225 Difference]: With dead ends: 383 [2022-07-21 16:03:40,118 INFO L226 Difference]: Without dead ends: 204 [2022-07-21 16:03:40,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:03:40,120 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 9 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:03:40,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 417 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:03:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-21 16:03:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2022-07-21 16:03:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 197 states have (on average 1.2791878172588833) internal successors, (252), 198 states have internal predecessors, (252), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 16:03:40,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 258 transitions. [2022-07-21 16:03:40,144 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 258 transitions. Word has length 62 [2022-07-21 16:03:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:03:40,144 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 258 transitions. [2022-07-21 16:03:40,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:03:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 258 transitions. [2022-07-21 16:03:40,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 16:03:40,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:03:40,146 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 16:03:40,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 16:03:40,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:40,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:03:40,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:03:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash -539986907, now seen corresponding path program 1 times [2022-07-21 16:03:40,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:03:40,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42969203] [2022-07-21 16:03:40,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:40,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:03:40,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:03:40,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148900345] [2022-07-21 16:03:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:40,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:40,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:03:40,485 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) [2022-07-21 16:03:40,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 16:03:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:03:41,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 16:03:41,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:03:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:03:41,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:03:41,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:03:41,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42969203] [2022-07-21 16:03:41,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:03:41,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148900345] [2022-07-21 16:03:41,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148900345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:03:41,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:03:41,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:03:41,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302704531] [2022-07-21 16:03:41,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:03:41,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:03:41,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:03:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:03:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:03:41,068 INFO L87 Difference]: Start difference. First operand 203 states and 258 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:03:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:03:41,116 INFO L93 Difference]: Finished difference Result 394 states and 504 transitions. [2022-07-21 16:03:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:03:41,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2022-07-21 16:03:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:03:41,118 INFO L225 Difference]: With dead ends: 394 [2022-07-21 16:03:41,118 INFO L226 Difference]: Without dead ends: 195 [2022-07-21 16:03:41,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:03:41,119 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 214 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 435 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 [2022-07-21 16:03:41,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 435 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:03:41,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-21 16:03:41,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 189. [2022-07-21 16:03:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 183 states have (on average 1.2622950819672132) internal successors, (231), 184 states have internal predecessors, (231), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 16:03:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 237 transitions. [2022-07-21 16:03:41,125 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 237 transitions. Word has length 62 [2022-07-21 16:03:41,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:03:41,126 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 237 transitions. [2022-07-21 16:03:41,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:03:41,126 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 237 transitions. [2022-07-21 16:03:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 16:03:41,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:03:41,127 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 16:03:41,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 16:03:41,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-21 16:03:41,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:03:41,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:03:41,344 INFO L85 PathProgramCache]: Analyzing trace with hash -67840205, now seen corresponding path program 1 times [2022-07-21 16:03:41,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:03:41,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719905564] [2022-07-21 16:03:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:41,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:03:41,439 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:03:41,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8662060] [2022-07-21 16:03:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:41,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:41,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:03:41,441 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) [2022-07-21 16:03:41,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 16:03:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:03:42,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 16:03:42,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:03:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:03:42,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:03:42,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:03:42,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719905564] [2022-07-21 16:03:42,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:03:42,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8662060] [2022-07-21 16:03:42,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8662060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:03:42,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:03:42,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:03:42,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31371469] [2022-07-21 16:03:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:03:42,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:03:42,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:03:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:03:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:03:42,197 INFO L87 Difference]: Start difference. First operand 189 states and 237 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:03:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:03:42,262 INFO L93 Difference]: Finished difference Result 487 states and 610 transitions. [2022-07-21 16:03:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:03:42,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-07-21 16:03:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:03:42,264 INFO L225 Difference]: With dead ends: 487 [2022-07-21 16:03:42,264 INFO L226 Difference]: Without dead ends: 302 [2022-07-21 16:03:42,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:03:42,266 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 101 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:03:42,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 469 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:03:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-07-21 16:03:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 295. [2022-07-21 16:03:42,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.259515570934256) internal successors, (364), 290 states have internal predecessors, (364), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 16:03:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2022-07-21 16:03:42,282 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 62 [2022-07-21 16:03:42,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:03:42,284 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2022-07-21 16:03:42,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:03:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2022-07-21 16:03:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 16:03:42,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:03:42,289 INFO L195 NwaCegarLoop]: 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] [2022-07-21 16:03:42,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 16:03:42,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:42,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:03:42,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:03:42,491 INFO L85 PathProgramCache]: Analyzing trace with hash -781422495, now seen corresponding path program 1 times [2022-07-21 16:03:42,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:03:42,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848856609] [2022-07-21 16:03:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:42,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:03:42,571 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:03:42,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211661967] [2022-07-21 16:03:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:42,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:42,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:03:42,588 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) [2022-07-21 16:03:42,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 16:03:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:03:43,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 16:03:43,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:03:43,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 16:03:43,090 INFO L390 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 [2022-07-21 16:03:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:03:43,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:03:43,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:03:43,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848856609] [2022-07-21 16:03:43,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:03:43,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211661967] [2022-07-21 16:03:43,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211661967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:03:43,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:03:43,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:03:43,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500172190] [2022-07-21 16:03:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:03:43,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:03:43,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:03:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:03:43,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:03:43,103 INFO L87 Difference]: Start difference. First operand 295 states and 370 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 16:03:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:03:43,816 INFO L93 Difference]: Finished difference Result 393 states and 500 transitions. [2022-07-21 16:03:43,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:03:43,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2022-07-21 16:03:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:03:43,818 INFO L225 Difference]: With dead ends: 393 [2022-07-21 16:03:43,818 INFO L226 Difference]: Without dead ends: 389 [2022-07-21 16:03:43,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:03:43,819 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 102 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 16:03:43,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 594 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 16:03:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-07-21 16:03:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 297. [2022-07-21 16:03:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 291 states have (on average 1.2577319587628866) internal successors, (366), 292 states have internal predecessors, (366), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 16:03:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 372 transitions. [2022-07-21 16:03:43,841 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 372 transitions. Word has length 77 [2022-07-21 16:03:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:03:43,847 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 372 transitions. [2022-07-21 16:03:43,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 16:03:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 372 transitions. [2022-07-21 16:03:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 16:03:43,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:03:43,852 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:03:43,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 16:03:44,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:44,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:03:44,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:03:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1698389817, now seen corresponding path program 1 times [2022-07-21 16:03:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:03:44,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709689870] [2022-07-21 16:03:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:03:44,133 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:03:44,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875844250] [2022-07-21 16:03:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:44,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:03:44,152 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) [2022-07-21 16:03:44,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 16:03:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:03:44,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 16:03:44,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:03:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:03:44,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:03:44,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:03:44,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709689870] [2022-07-21 16:03:44,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:03:44,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875844250] [2022-07-21 16:03:44,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875844250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:03:44,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:03:44,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:03:44,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890760154] [2022-07-21 16:03:44,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:03:44,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:03:44,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:03:44,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:03:44,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:03:44,671 INFO L87 Difference]: Start difference. First operand 297 states and 372 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 16:03:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:03:44,719 INFO L93 Difference]: Finished difference Result 487 states and 631 transitions. [2022-07-21 16:03:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:03:44,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-07-21 16:03:44,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:03:44,720 INFO L225 Difference]: With dead ends: 487 [2022-07-21 16:03:44,721 INFO L226 Difference]: Without dead ends: 339 [2022-07-21 16:03:44,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:03:44,721 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 8 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:03:44,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 405 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:03:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-21 16:03:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2022-07-21 16:03:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 331 states have (on average 1.2265861027190332) internal successors, (406), 332 states have internal predecessors, (406), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 16:03:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 412 transitions. [2022-07-21 16:03:44,728 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 412 transitions. Word has length 111 [2022-07-21 16:03:44,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:03:44,728 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 412 transitions. [2022-07-21 16:03:44,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 16:03:44,729 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 412 transitions. [2022-07-21 16:03:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 16:03:44,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:03:44,730 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:03:44,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 16:03:44,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:44,949 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:03:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:03:44,950 INFO L85 PathProgramCache]: Analyzing trace with hash -687272567, now seen corresponding path program 1 times [2022-07-21 16:03:44,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:03:44,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397651156] [2022-07-21 16:03:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:44,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:03:44,982 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:03:44,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187423592] [2022-07-21 16:03:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:44,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:44,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:03:44,984 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) [2022-07-21 16:03:44,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 16:03:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:03:45,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 16:03:45,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:03:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:03:45,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:03:45,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:03:45,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397651156] [2022-07-21 16:03:45,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:03:45,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187423592] [2022-07-21 16:03:45,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187423592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:03:45,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:03:45,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 16:03:45,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516689076] [2022-07-21 16:03:45,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:03:45,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:03:45,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:03:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:03:45,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:03:45,491 INFO L87 Difference]: Start difference. First operand 337 states and 412 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 16:03:45,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:03:45,559 INFO L93 Difference]: Finished difference Result 502 states and 626 transitions. [2022-07-21 16:03:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:03:45,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-07-21 16:03:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:03:45,561 INFO L225 Difference]: With dead ends: 502 [2022-07-21 16:03:45,561 INFO L226 Difference]: Without dead ends: 314 [2022-07-21 16:03:45,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:03:45,562 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 108 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:03:45,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 522 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:03:45,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-21 16:03:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2022-07-21 16:03:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 303 states have (on average 1.2013201320132014) internal successors, (364), 304 states have internal predecessors, (364), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 16:03:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 370 transitions. [2022-07-21 16:03:45,568 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 370 transitions. Word has length 111 [2022-07-21 16:03:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:03:45,569 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 370 transitions. [2022-07-21 16:03:45,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 16:03:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 370 transitions. [2022-07-21 16:03:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 16:03:45,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:03:45,570 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:03:45,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 16:03:45,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:45,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:03:45,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:03:45,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1844881027, now seen corresponding path program 1 times [2022-07-21 16:03:45,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:03:45,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87593102] [2022-07-21 16:03:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:45,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:03:45,805 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:03:45,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009758577] [2022-07-21 16:03:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:45,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:45,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:03:45,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 16:03:45,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 16:03:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:03:46,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 16:03:46,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:03:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 16:03:46,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:03:46,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:03:46,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87593102] [2022-07-21 16:03:46,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:03:46,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009758577] [2022-07-21 16:03:46,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009758577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:03:46,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:03:46,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:03:46,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841235244] [2022-07-21 16:03:46,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:03:46,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:03:46,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:03:46,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:03:46,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:03:46,416 INFO L87 Difference]: Start difference. First operand 309 states and 370 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 16:03:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:03:46,675 INFO L93 Difference]: Finished difference Result 661 states and 798 transitions. [2022-07-21 16:03:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:03:46,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-07-21 16:03:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:03:46,677 INFO L225 Difference]: With dead ends: 661 [2022-07-21 16:03:46,677 INFO L226 Difference]: Without dead ends: 400 [2022-07-21 16:03:46,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:03:46,678 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 410 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:03:46,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 375 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:03:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-07-21 16:03:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 393. [2022-07-21 16:03:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 387 states have (on average 1.2093023255813953) internal successors, (468), 388 states have internal predecessors, (468), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 16:03:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 474 transitions. [2022-07-21 16:03:46,688 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 474 transitions. Word has length 111 [2022-07-21 16:03:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:03:46,688 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 474 transitions. [2022-07-21 16:03:46,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 16:03:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 474 transitions. [2022-07-21 16:03:46,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 16:03:46,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:03:46,689 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:03:46,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 16:03:46,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:46,904 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:03:46,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:03:46,904 INFO L85 PathProgramCache]: Analyzing trace with hash 473252787, now seen corresponding path program 1 times [2022-07-21 16:03:46,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:03:46,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836531049] [2022-07-21 16:03:46,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:46,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:03:46,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:03:46,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721963716] [2022-07-21 16:03:46,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:03:46,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:03:46,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:03:46,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 16:03:46,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 16:04:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:04:46,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 16:04:46,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:04:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:04:46,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:04:46,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:04:46,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836531049] [2022-07-21 16:04:46,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:04:46,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721963716] [2022-07-21 16:04:46,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721963716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:04:46,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:04:46,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:04:46,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583106029] [2022-07-21 16:04:46,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:04:46,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:04:46,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:04:46,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:04:46,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:04:46,874 INFO L87 Difference]: Start difference. First operand 393 states and 474 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 16:04:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:04:46,901 INFO L93 Difference]: Finished difference Result 738 states and 897 transitions. [2022-07-21 16:04:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:04:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 118 [2022-07-21 16:04:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:04:46,904 INFO L225 Difference]: With dead ends: 738 [2022-07-21 16:04:46,904 INFO L226 Difference]: Without dead ends: 396 [2022-07-21 16:04:46,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:04:46,905 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 2 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 653 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 [2022-07-21 16:04:46,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 653 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:04:46,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-07-21 16:04:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2022-07-21 16:04:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 389 states have (on average 1.2107969151670952) internal successors, (471), 391 states have internal predecessors, (471), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 16:04:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 478 transitions. [2022-07-21 16:04:46,916 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 478 transitions. Word has length 118 [2022-07-21 16:04:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:04:46,916 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 478 transitions. [2022-07-21 16:04:46,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 16:04:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 478 transitions. [2022-07-21 16:04:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 16:04:46,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:04:46,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:04:46,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 16:04:47,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 16:04:47,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:04:47,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:04:47,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1462820267, now seen corresponding path program 1 times [2022-07-21 16:04:47,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:04:47,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227361642] [2022-07-21 16:04:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:04:47,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:04:47,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:04:47,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291205233] [2022-07-21 16:04:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:04:47,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:04:47,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:04:47,183 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 16:04:47,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 16:05:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:05:51,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 16:05:51,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:05:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 16:05:51,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:05:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 16:05:51,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:05:51,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227361642] [2022-07-21 16:05:51,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:05:51,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291205233] [2022-07-21 16:05:51,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291205233] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:05:51,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:05:51,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-21 16:05:51,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730029620] [2022-07-21 16:05:51,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:05:51,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 16:05:51,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:05:51,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 16:05:51,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:05:51,446 INFO L87 Difference]: Start difference. First operand 396 states and 478 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 16:05:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:05:51,542 INFO L93 Difference]: Finished difference Result 752 states and 919 transitions. [2022-07-21 16:05:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 16:05:51,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 120 [2022-07-21 16:05:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:05:51,545 INFO L225 Difference]: With dead ends: 752 [2022-07-21 16:05:51,545 INFO L226 Difference]: Without dead ends: 405 [2022-07-21 16:05:51,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-07-21 16:05:51,547 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 24 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:05:51,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 861 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:05:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-21 16:05:51,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2022-07-21 16:05:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 397 states have (on average 1.216624685138539) internal successors, (483), 399 states have internal predecessors, (483), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-21 16:05:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 491 transitions. [2022-07-21 16:05:51,555 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 491 transitions. Word has length 120 [2022-07-21 16:05:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:05:51,556 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 491 transitions. [2022-07-21 16:05:51,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 16:05:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 491 transitions. [2022-07-21 16:05:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 16:05:51,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:05:51,557 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:05:51,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-21 16:05:51,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:05:51,784 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:05:51,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:05:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1251955085, now seen corresponding path program 2 times [2022-07-21 16:05:51,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:05:51,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342505845] [2022-07-21 16:05:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:05:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:05:51,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:05:51,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418273540] [2022-07-21 16:05:51,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 16:05:51,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:05:51,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:05:51,841 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 16:05:51,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 16:05:52,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 16:05:52,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:05:52,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-21 16:05:52,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:05:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 16:05:52,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:05:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 16:05:52,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:05:52,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342505845] [2022-07-21 16:05:52,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 16:05:52,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418273540] [2022-07-21 16:05:52,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418273540] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:05:52,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:05:52,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2022-07-21 16:05:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409362126] [2022-07-21 16:05:52,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:05:52,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 16:05:52,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:05:52,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 16:05:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-21 16:05:52,950 INFO L87 Difference]: Start difference. First operand 405 states and 491 transitions. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 16:05:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:05:53,154 INFO L93 Difference]: Finished difference Result 763 states and 932 transitions. [2022-07-21 16:05:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 16:05:53,155 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-07-21 16:05:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:05:53,157 INFO L225 Difference]: With dead ends: 763 [2022-07-21 16:05:53,157 INFO L226 Difference]: Without dead ends: 411 [2022-07-21 16:05:53,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-07-21 16:05:53,158 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 18 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:05:53,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1698 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:05:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-07-21 16:05:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 409. [2022-07-21 16:05:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 401 states have (on average 1.2194513715710724) internal successors, (489), 403 states have internal predecessors, (489), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 16:05:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 496 transitions. [2022-07-21 16:05:53,169 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 496 transitions. Word has length 124 [2022-07-21 16:05:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:05:53,170 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 496 transitions. [2022-07-21 16:05:53,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 16:05:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 496 transitions. [2022-07-21 16:05:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 16:05:53,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:05:53,196 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:05:53,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 16:05:53,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 16:05:53,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 16:05:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:05:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1600831475, now seen corresponding path program 3 times [2022-07-21 16:05:53,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:05:53,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808030993] [2022-07-21 16:05:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:05:53,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:05:53,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 16:05:53,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14502375] [2022-07-21 16:05:53,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 16:05:53,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:05:53,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:05:53,460 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 16:05:53,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process