./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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_SFH_test2-2.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 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 22:54:15,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:54:15,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:54:15,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:54:15,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:54:15,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:54:15,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:54:15,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:54:15,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:54:15,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:54:15,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:54:15,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:54:15,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:54:15,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:54:15,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:54:15,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:54:15,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:54:15,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:54:15,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:54:15,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:54:15,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:54:15,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:54:15,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:54:15,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:54:15,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:54:15,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:54:15,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:54:15,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:54:15,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:54:15,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:54:15,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:54:15,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:54:15,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:54:15,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:54:15,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:54:15,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:54:15,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:54:15,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:54:15,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:54:15,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:54:15,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:54:15,405 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 22:54:15,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:54:15,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:54:15,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:54:15,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:54:15,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:54:15,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:54:15,423 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:54:15,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:54:15,424 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:54:15,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 22:54:15,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:54:15,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:54:15,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:54:15,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:54:15,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:54:15,425 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:54:15,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:54:15,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:54:15,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:54:15,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:54:15,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:54:15,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:54:15,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:54:15,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:54:15,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:54:15,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:54:15,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 22:54:15,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 22:54:15,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:54:15,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:54:15,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:54:15,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:54:15,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2021-11-07 22:54:15,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:54:15,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:54:15,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:54:15,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:54:15,665 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:54:15,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-07 22:54:15,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603a87840/53658e98d5dd49028fcc394f0208482f/FLAG9f284628c [2021-11-07 22:54:16,177 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:54:16,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-07 22:54:16,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603a87840/53658e98d5dd49028fcc394f0208482f/FLAG9f284628c [2021-11-07 22:54:16,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603a87840/53658e98d5dd49028fcc394f0208482f [2021-11-07 22:54:16,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:54:16,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:54:16,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:54:16,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:54:16,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:54:16,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f29a2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16, skipping insertion in model container [2021-11-07 22:54:16,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:54:16,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:54:16,569 WARN L228 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_SFH_test2-2.i[37019,37032] [2021-11-07 22:54:16,659 WARN L228 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_SFH_test2-2.i[47352,47365] [2021-11-07 22:54:16,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:54:16,685 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:54:16,709 WARN L228 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_SFH_test2-2.i[37019,37032] [2021-11-07 22:54:16,758 WARN L228 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_SFH_test2-2.i[47352,47365] [2021-11-07 22:54:16,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:54:16,807 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:54:16,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16 WrapperNode [2021-11-07 22:54:16,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:54:16,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:54:16,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:54:16,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:54:16,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:54:16,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:54:16,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:54:16,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:54:16,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:54:16,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:54:16,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:54:16,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:54:16,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (1/1) ... [2021-11-07 22:54:16,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:54:16,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:54:16,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 22:54:16,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 22:54:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:54:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 22:54:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:54:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:54:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 22:54:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 22:54:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:54:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:54:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 22:54:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:54:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:54:17,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:54:17,911 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 22:54:17,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:54:17 BoogieIcfgContainer [2021-11-07 22:54:17,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:54:17,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:54:17,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:54:17,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:54:17,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:54:16" (1/3) ... [2021-11-07 22:54:17,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b8fd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:54:17, skipping insertion in model container [2021-11-07 22:54:17,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:16" (2/3) ... [2021-11-07 22:54:17,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b8fd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:54:17, skipping insertion in model container [2021-11-07 22:54:17,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:54:17" (3/3) ... [2021-11-07 22:54:17,920 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-2.i [2021-11-07 22:54:17,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:54:17,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 22:54:17,956 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:54:17,961 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 22:54:17,961 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 22:54:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:17,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 22:54:17,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:17,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:17,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:17,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:17,985 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-07 22:54:17,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:54:17,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70804780] [2021-11-07 22:54:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:17,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:54:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:18,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:54:18,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70804780] [2021-11-07 22:54:18,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70804780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:18,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:18,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 22:54:18,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972079494] [2021-11-07 22:54:18,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:18,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:54:18,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:54:18,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:54:18,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:54:18,126 INFO L87 Difference]: Start difference. First operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:18,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:18,172 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-07 22:54:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:54:18,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 22:54:18,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:18,183 INFO L225 Difference]: With dead ends: 410 [2021-11-07 22:54:18,184 INFO L226 Difference]: Without dead ends: 173 [2021-11-07 22:54:18,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:54:18,190 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:18,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:54:18,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-07 22:54:18,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-07 22:54:18,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-07 22:54:18,231 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-07 22:54:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:18,231 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-07 22:54:18,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-07 22:54:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 22:54:18,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:18,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:18,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 22:54:18,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:18,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:18,236 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-07 22:54:18,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:54:18,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881702791] [2021-11-07 22:54:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:18,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:54:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:18,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:54:18,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881702791] [2021-11-07 22:54:18,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881702791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:18,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:18,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:54:18,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766185540] [2021-11-07 22:54:18,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:18,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:54:18,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:54:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:54:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:54:18,347 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:18,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:18,603 INFO L93 Difference]: Finished difference Result 377 states and 490 transitions. [2021-11-07 22:54:18,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:54:18,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 22:54:18,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:18,605 INFO L225 Difference]: With dead ends: 377 [2021-11-07 22:54:18,605 INFO L226 Difference]: Without dead ends: 294 [2021-11-07 22:54:18,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:54:18,606 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 153 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.50ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 227.32ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:18,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 534 Invalid, 142 Unknown, 0 Unchecked, 4.50ms Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 227.32ms Time] [2021-11-07 22:54:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-07 22:54:18,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 175. [2021-11-07 22:54:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 174 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-07 22:54:18,614 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2021-11-07 22:54:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:18,614 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-07 22:54:18,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-07 22:54:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:54:18,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:18,621 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:18,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 22:54:18,621 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:18,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:18,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2021-11-07 22:54:18,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:54:18,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584756831] [2021-11-07 22:54:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:18,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:54:18,638 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:54:18,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132441819] [2021-11-07 22:54:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:18,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:18,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:54:18,641 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:54:18,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 22:54:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:18,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:54:18,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:19,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:54:19,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:54:19,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584756831] [2021-11-07 22:54:19,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:54:19,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132441819] [2021-11-07 22:54:19,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132441819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:19,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:19,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:54:19,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215094626] [2021-11-07 22:54:19,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:19,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:54:19,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:54:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:54:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:54:19,005 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:19,047 INFO L93 Difference]: Finished difference Result 367 states and 481 transitions. [2021-11-07 22:54:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:54:19,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-07 22:54:19,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:19,048 INFO L225 Difference]: With dead ends: 367 [2021-11-07 22:54:19,048 INFO L226 Difference]: Without dead ends: 196 [2021-11-07 22:54:19,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:54:19,050 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.65ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.51ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:19,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 395 Invalid, 72 Unknown, 0 Unchecked, 0.65ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 37.51ms Time] [2021-11-07 22:54:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-07 22:54:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-11-07 22:54:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.306878306878307) internal successors, (247), 194 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:19,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 247 transitions. [2021-11-07 22:54:19,055 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 247 transitions. Word has length 96 [2021-11-07 22:54:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:19,056 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 247 transitions. [2021-11-07 22:54:19,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:19,056 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 247 transitions. [2021-11-07 22:54:19,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:54:19,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:19,058 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:19,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:19,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:19,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1343744819, now seen corresponding path program 1 times [2021-11-07 22:54:19,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:54:19,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782874530] [2021-11-07 22:54:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:19,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:54:19,286 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:54:19,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385588633] [2021-11-07 22:54:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:19,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:19,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:54:19,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:54:19,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 22:54:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:19,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:54:19,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 22:54:19,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:54:19,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:54:19,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782874530] [2021-11-07 22:54:19,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:54:19,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385588633] [2021-11-07 22:54:19,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385588633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:19,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:19,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:54:19,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698207039] [2021-11-07 22:54:19,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:19,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:54:19,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:54:19,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:54:19,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:54:19,588 INFO L87 Difference]: Start difference. First operand 195 states and 247 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:19,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:19,635 INFO L93 Difference]: Finished difference Result 298 states and 384 transitions. [2021-11-07 22:54:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:54:19,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 96 [2021-11-07 22:54:19,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:19,637 INFO L225 Difference]: With dead ends: 298 [2021-11-07 22:54:19,637 INFO L226 Difference]: Without dead ends: 216 [2021-11-07 22:54:19,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:54:19,638 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.28ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:19,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 395 Invalid, 72 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 43.28ms Time] [2021-11-07 22:54:19,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-07 22:54:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-11-07 22:54:19,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 209 states have (on average 1.277511961722488) internal successors, (267), 214 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 267 transitions. [2021-11-07 22:54:19,643 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 267 transitions. Word has length 96 [2021-11-07 22:54:19,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:19,643 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 267 transitions. [2021-11-07 22:54:19,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 267 transitions. [2021-11-07 22:54:19,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:54:19,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:19,644 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:19,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:19,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-07 22:54:19,862 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:19,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1663949871, now seen corresponding path program 1 times [2021-11-07 22:54:19,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:54:19,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463582464] [2021-11-07 22:54:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:19,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:54:19,882 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:54:19,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381051513] [2021-11-07 22:54:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:19,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:19,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:54:19,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:54:19,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 22:54:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:20,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:54:20,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:20,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:54:20,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:54:20,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463582464] [2021-11-07 22:54:20,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:54:20,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381051513] [2021-11-07 22:54:20,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381051513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:20,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:20,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:54:20,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650291972] [2021-11-07 22:54:20,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:20,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:54:20,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:54:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:54:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:54:20,195 INFO L87 Difference]: Start difference. First operand 215 states and 267 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:20,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:20,245 INFO L93 Difference]: Finished difference Result 418 states and 522 transitions. [2021-11-07 22:54:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:54:20,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 96 [2021-11-07 22:54:20,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:20,246 INFO L225 Difference]: With dead ends: 418 [2021-11-07 22:54:20,246 INFO L226 Difference]: Without dead ends: 207 [2021-11-07 22:54:20,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:54:20,247 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 213 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.14ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:20,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 406 Invalid, 66 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 40.14ms Time] [2021-11-07 22:54:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-07 22:54:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2021-11-07 22:54:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.2615384615384615) internal successors, (246), 200 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:20,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2021-11-07 22:54:20,251 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 96 [2021-11-07 22:54:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:20,251 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2021-11-07 22:54:20,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:20,252 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2021-11-07 22:54:20,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:54:20,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:20,253 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:20,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:20,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:20,473 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:20,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash 569918303, now seen corresponding path program 1 times [2021-11-07 22:54:20,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:54:20,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55727788] [2021-11-07 22:54:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:20,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:54:20,482 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:54:20,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683162301] [2021-11-07 22:54:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:20,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:20,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:54:20,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:54:20,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 22:54:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:20,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:54:20,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 22:54:20,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:54:20,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:54:20,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55727788] [2021-11-07 22:54:20,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:54:20,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683162301] [2021-11-07 22:54:20,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683162301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:20,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:20,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:54:20,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455930966] [2021-11-07 22:54:20,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:20,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:54:20,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:54:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:54:20,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:54:20,746 INFO L87 Difference]: Start difference. First operand 201 states and 246 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:20,803 INFO L93 Difference]: Finished difference Result 295 states and 364 transitions. [2021-11-07 22:54:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:54:20,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 96 [2021-11-07 22:54:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:20,804 INFO L225 Difference]: With dead ends: 295 [2021-11-07 22:54:20,804 INFO L226 Difference]: Without dead ends: 193 [2021-11-07 22:54:20,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:54:20,805 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 96 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.88ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:20,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 496 Invalid, 66 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 47.88ms Time] [2021-11-07 22:54:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-07 22:54:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2021-11-07 22:54:20,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2430939226519337) internal successors, (225), 186 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2021-11-07 22:54:20,809 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 96 [2021-11-07 22:54:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:20,809 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2021-11-07 22:54:20,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2021-11-07 22:54:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:54:20,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:20,810 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:20,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:21,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:21,027 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:21,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2021-11-07 22:54:21,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:54:21,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227207236] [2021-11-07 22:54:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:21,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:54:21,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:54:21,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824533734] [2021-11-07 22:54:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:21,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:21,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:54:21,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:54:21,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 22:54:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:21,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:54:21,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:21,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:54:21,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:54:21,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227207236] [2021-11-07 22:54:21,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:54:21,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824533734] [2021-11-07 22:54:21,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824533734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:21,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:21,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:54:21,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752245228] [2021-11-07 22:54:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:21,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:54:21,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:54:21,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:54:21,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:54:21,404 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:21,445 INFO L93 Difference]: Finished difference Result 486 states and 579 transitions. [2021-11-07 22:54:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:54:21,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-07 22:54:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:21,447 INFO L225 Difference]: With dead ends: 486 [2021-11-07 22:54:21,447 INFO L226 Difference]: Without dead ends: 303 [2021-11-07 22:54:21,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:54:21,448 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 94 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.82ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:21,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 441 Invalid, 14 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 32.82ms Time] [2021-11-07 22:54:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-07 22:54:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2021-11-07 22:54:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 285 states have (on average 1.2280701754385965) internal successors, (350), 290 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2021-11-07 22:54:21,454 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 96 [2021-11-07 22:54:21,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:21,455 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2021-11-07 22:54:21,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:21,455 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2021-11-07 22:54:21,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 22:54:21,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:21,456 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:21,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:21,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:21,674 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:21,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:21,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2021-11-07 22:54:21,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:54:21,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712009319] [2021-11-07 22:54:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:21,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:54:21,697 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:54:21,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666033772] [2021-11-07 22:54:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:21,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:21,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:54:21,712 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:54:21,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 22:54:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:21,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:54:21,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:21,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:54:21,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:54:21,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712009319] [2021-11-07 22:54:21,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:54:21,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666033772] [2021-11-07 22:54:21,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666033772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:21,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:21,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:54:21,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209390396] [2021-11-07 22:54:21,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:21,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:54:21,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:54:21,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:54:21,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:54:21,987 INFO L87 Difference]: Start difference. First operand 291 states and 350 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:22,411 INFO L93 Difference]: Finished difference Result 474 states and 571 transitions. [2021-11-07 22:54:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:54:22,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2021-11-07 22:54:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:22,414 INFO L225 Difference]: With dead ends: 474 [2021-11-07 22:54:22,414 INFO L226 Difference]: Without dead ends: 231 [2021-11-07 22:54:22,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:54:22,414 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 310 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 383.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 410.39ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:22,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 266 Invalid, 49 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 410.39ms Time] [2021-11-07 22:54:22,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-07 22:54:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-11-07 22:54:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 225 states have (on average 1.208888888888889) internal successors, (272), 230 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 272 transitions. [2021-11-07 22:54:22,419 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 272 transitions. Word has length 103 [2021-11-07 22:54:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:22,420 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 272 transitions. [2021-11-07 22:54:22,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 272 transitions. [2021-11-07 22:54:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 22:54:22,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:22,421 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:22,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:22,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:22,636 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:22,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:22,636 INFO L85 PathProgramCache]: Analyzing trace with hash 541560378, now seen corresponding path program 1 times [2021-11-07 22:54:22,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:54:22,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297162174] [2021-11-07 22:54:22,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:22,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:54:22,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:54:22,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188048662] [2021-11-07 22:54:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:22,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:22,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:54:22,646 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) [2021-11-07 22:54:22,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 22:54:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:22,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 22:54:22,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:22,800 INFO L388 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 [2021-11-07 22:54:22,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 22:54:22,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:22,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-07 22:54:22,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:22,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:22,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:22,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-07 22:54:23,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-07 22:54:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-11-07 22:54:23,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 66 [2021-11-07 22:54:23,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 47 [2021-11-07 22:54:23,688 INFO L388 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 13 treesize of output 9 [2021-11-07 22:54:23,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 47 [2021-11-07 22:54:23,714 INFO L388 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 29 treesize of output 25 [2021-11-07 22:54:23,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:23,728 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-07 22:54:23,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2021-11-07 22:54:24,941 INFO L354 Elim1Store]: treesize reduction 364, result has 11.9 percent of original size [2021-11-07 22:54:24,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2845 treesize of output 2294 [2021-11-07 22:54:24,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:24,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:24,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:24,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:54:29,088 INFO L354 Elim1Store]: treesize reduction 7776, result has 3.0 percent of original size [2021-11-07 22:54:29,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 3314 treesize of output 1805 [2021-11-07 22:54:29,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:54:29,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297162174] [2021-11-07 22:54:29,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:54:29,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188048662] [2021-11-07 22:54:29,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-07 22:54:29,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:29,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 22:54:29,143 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-07 22:54:29,143 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 22:54:29,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-07 22:54:29,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-07 22:54:29,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-11-07 22:54:29,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-07 22:54:29,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-07 22:54:29,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-07 22:54:29,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:29,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:54:29,366 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:29,368 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 22:54:29,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:54:29 BoogieIcfgContainer [2021-11-07 22:54:29,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 22:54:29,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 22:54:29,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 22:54:29,393 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 22:54:29,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:54:17" (3/4) ... [2021-11-07 22:54:29,396 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 22:54:29,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 22:54:29,396 INFO L158 Benchmark]: Toolchain (without parser) took 13183.88ms. Allocated memory was 75.5MB in the beginning and 169.9MB in the end (delta: 94.4MB). Free memory was 28.2MB in the beginning and 90.3MB in the end (delta: -62.1MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2021-11-07 22:54:29,396 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 75.5MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 22:54:29,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 590.97ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 28.0MB in the beginning and 58.9MB in the end (delta: -30.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-07 22:54:29,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.41ms. Allocated memory is still 104.9MB. Free memory was 58.9MB in the beginning and 52.0MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-07 22:54:29,397 INFO L158 Benchmark]: Boogie Preprocessor took 56.19ms. Allocated memory is still 104.9MB. Free memory was 52.0MB in the beginning and 44.5MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-07 22:54:29,399 INFO L158 Benchmark]: RCFGBuilder took 978.59ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 44.5MB in the beginning and 104.9MB in the end (delta: -60.4MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2021-11-07 22:54:29,399 INFO L158 Benchmark]: TraceAbstraction took 11478.67ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 104.9MB in the beginning and 90.3MB in the end (delta: 14.6MB). Peak memory consumption was 94.1MB. Max. memory is 16.1GB. [2021-11-07 22:54:29,399 INFO L158 Benchmark]: Witness Printer took 2.76ms. Allocated memory is still 169.9MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 22:54:29,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 75.5MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 590.97ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 28.0MB in the beginning and 58.9MB in the end (delta: -30.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.41ms. Allocated memory is still 104.9MB. Free memory was 58.9MB in the beginning and 52.0MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.19ms. Allocated memory is still 104.9MB. Free memory was 52.0MB in the beginning and 44.5MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 978.59ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 44.5MB in the beginning and 104.9MB in the end (delta: -60.4MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11478.67ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 104.9MB in the beginning and 90.3MB in the end (delta: 14.6MB). Peak memory consumption was 94.1MB. Max. memory is 16.1GB. * Witness Printer took 2.76ms. Allocated memory is still 169.9MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 828]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseXor at line 824, overapproximation of bitwiseAnd at line 824. Possible FailurePath: [L785] int count_int_int = 0; [L812] int i; [L813] example_user_t *user, *tmp, *users=((void *)0); [L814] i=0 [L814] EXPR \read(i) [L814] COND TRUE i<10 [L815] user = (example_user_t*)malloc(sizeof(example_user_t)) [L816] COND FALSE !(user == ((void *)0)) [L819] EXPR \read(i) [L819] user->id = i [L820] EXPR \read(i) [L820] EXPR \read(i) [L820] user->cookie = i*i [L821] unsigned _ha_hashv; [L821] unsigned _hj_i,_hj_j,_hj_k; [L821] unsigned const char *_hj_key=(unsigned const char*)(&((user)->id)); [L821] _ha_hashv = 0xfeedbeefu [L821] EXPR _hj_j = 0x9e3779b9u [L821] _hj_i = _hj_j = 0x9e3779b9u [L821] _hj_k = (unsigned)(sizeof(int)) [L821] COND FALSE !(_hj_k >= 12U) [L821] _ha_hashv += (unsigned)(sizeof(int)) [L821] case 11: [L821] case 10: [L821] case 9: [L821] case 8: [L821] case 7: [L821] case 6: [L821] case 5: [L821] case 4: [L821] EXPR _hj_key[3] [L821] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L821] case 3: [L821] EXPR _hj_key[2] [L821] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L821] case 2: [L821] EXPR _hj_key[1] [L821] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L821] case 1: [L821] EXPR _hj_key[0] [L821] _hj_i += _hj_key[0] [L821] _hj_i -= _hj_j [L821] _hj_i -= _ha_hashv [L821] _hj_i ^= ( _ha_hashv >> 13 ) [L821] _hj_j -= _ha_hashv [L821] _hj_j -= _hj_i [L821] _hj_j ^= ( _hj_i << 8 ) [L821] _ha_hashv -= _hj_i [L821] _ha_hashv -= _hj_j [L821] _ha_hashv ^= ( _hj_j >> 13 ) [L821] _hj_i -= _hj_j [L821] _hj_i -= _ha_hashv [L821] _hj_i ^= ( _ha_hashv >> 12 ) [L821] _hj_j -= _ha_hashv [L821] _hj_j -= _hj_i [L821] _hj_j ^= ( _hj_i << 16 ) [L821] _ha_hashv -= _hj_i [L821] _ha_hashv -= _hj_j [L821] _ha_hashv ^= ( _hj_j >> 5 ) [L821] _hj_i -= _hj_j [L821] _hj_i -= _ha_hashv [L821] _hj_i ^= ( _ha_hashv >> 3 ) [L821] _hj_j -= _ha_hashv [L821] _hj_j -= _hj_i [L821] _hj_j ^= ( _hj_i << 10 ) [L821] _ha_hashv -= _hj_i [L821] _ha_hashv -= _hj_j [L821] _ha_hashv ^= ( _hj_j >> 15 ) [L821] (user)->hh.hashv = (_ha_hashv) [L821] (user)->hh.key = (char*) (&((user)->id)) [L821] (user)->hh.keylen = (unsigned) (sizeof(int)) [L821] COND TRUE !(users) [L821] (user)->hh.next = ((void *)0) [L821] (user)->hh.prev = ((void *)0) [L821] (user)->hh.tbl = (UT_hash_table*)malloc(sizeof(UT_hash_table)) [L821] EXPR (user)->hh.tbl [L821] COND FALSE !(!(user)->hh.tbl) [L821] (user)->hh.tbl [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->tail = &((user)->hh) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->num_buckets = 32U [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->log2_num_buckets = 5U [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->hho = (char*)(&(user)->hh) - (char*)(user) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->buckets = (UT_hash_bucket*)malloc(32U * sizeof(struct UT_hash_bucket)) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->signature = 0xa0111fe1u [L821] EXPR (user)->hh.tbl [L821] EXPR (user)->hh.tbl->buckets [L821] COND FALSE !(!(user)->hh.tbl->buckets) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->buckets [L821] (users) = (user) [L821] unsigned _ha_bkt; [L821] EXPR (users)->hh.tbl [L821] EXPR (users)->hh.tbl->num_items [L821] (users)->hh.tbl->num_items++ [L821] EXPR (users)->hh.tbl [L821] EXPR (users)->hh.tbl->num_buckets [L821] _ha_bkt = ((_ha_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L821] EXPR (users)->hh.tbl [L821] EXPR (users)->hh.tbl->buckets [L821] UT_hash_bucket *_ha_head = &((users)->hh.tbl->buckets[_ha_bkt]); [L821] EXPR _ha_head->count [L821] _ha_head->count++ [L821] EXPR _ha_head->hh_head [L821] (&(user)->hh)->hh_next = _ha_head->hh_head [L821] (&(user)->hh)->hh_prev = ((void *)0) [L821] EXPR _ha_head->hh_head [L821] COND FALSE !(_ha_head->hh_head != ((void *)0)) [L821] _ha_head->hh_head = (&(user)->hh) [L821] EXPR _ha_head->count [L821] EXPR _ha_head->expand_mult [L821] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L821] EXPR (&(user)->hh)->tbl [L821] EXPR (&(user)->hh)->tbl->noexpand [L821] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L821] COND FALSE !((_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand) [L814] EXPR \read(i) [L814] i++ [L814] EXPR \read(i) [L814] COND FALSE !(i<10) [L823] i=0 [L823] EXPR \read(i) [L823] COND TRUE i<10 [L824] unsigned _hf_hashv; [L824] unsigned _hj_i,_hj_j,_hj_k; [L824] unsigned const char *_hj_key=(unsigned const char*)(&i); [L824] _hf_hashv = 0xfeedbeefu [L824] EXPR _hj_j = 0x9e3779b9u [L824] _hj_i = _hj_j = 0x9e3779b9u [L824] _hj_k = (unsigned)(sizeof(int)) [L824] COND FALSE !(_hj_k >= 12U) [L824] _hf_hashv += (unsigned)(sizeof(int)) [L824] case 11: [L824] case 10: [L824] case 9: [L824] case 8: [L824] case 7: [L824] case 6: [L824] case 5: [L824] case 4: [L824] EXPR _hj_key[3] [L824] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L824] case 3: [L824] EXPR _hj_key[2] [L824] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L824] case 2: [L824] EXPR _hj_key[1] [L824] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L824] case 1: [L824] EXPR _hj_key[0] [L824] _hj_i += _hj_key[0] [L824] _hj_i -= _hj_j [L824] _hj_i -= _hf_hashv [L824] _hj_i ^= ( _hf_hashv >> 13 ) [L824] _hj_j -= _hf_hashv [L824] _hj_j -= _hj_i [L824] _hj_j ^= ( _hj_i << 8 ) [L824] _hf_hashv -= _hj_i [L824] _hf_hashv -= _hj_j [L824] _hf_hashv ^= ( _hj_j >> 13 ) [L824] _hj_i -= _hj_j [L824] _hj_i -= _hf_hashv [L824] _hj_i ^= ( _hf_hashv >> 12 ) [L824] _hj_j -= _hf_hashv [L824] _hj_j -= _hj_i [L824] _hj_j ^= ( _hj_i << 16 ) [L824] _hf_hashv -= _hj_i [L824] _hf_hashv -= _hj_j [L824] _hf_hashv ^= ( _hj_j >> 5 ) [L824] _hj_i -= _hj_j [L824] _hj_i -= _hf_hashv [L824] _hj_i ^= ( _hf_hashv >> 3 ) [L824] _hj_j -= _hf_hashv [L824] _hj_j -= _hj_i [L824] _hj_j ^= ( _hj_i << 10 ) [L824] _hf_hashv -= _hj_i [L824] _hf_hashv -= _hj_j [L824] _hf_hashv ^= ( _hj_j >> 15 ) [L824] (tmp) = ((void *)0) [L824] COND TRUE \read(*users) [L824] unsigned _hf_bkt; [L824] EXPR (users)->hh.tbl [L824] EXPR (users)->hh.tbl->num_buckets [L824] _hf_bkt = ((_hf_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L824] EXPR (users)->hh.tbl [L824] EXPR (users)->hh.tbl->buckets [L824] EXPR ((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head [L824] COND FALSE !(((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head != ((void *)0)) [L824] (tmp) = ((void *)0) [L824] COND FALSE !((tmp) != ((void *)0)) [L825] COND FALSE !(tmp != ((void *)0)) [L828] reach_error() - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 206 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 11411.81ms, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 22.71ms, AutomataDifference: 1038.19ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 9.28ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 884 SdHoareTripleChecker+Valid, 839.34ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 884 mSDsluCounter, 3202 SdHoareTripleChecker+Invalid, 713.14ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1464 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 370 IncrementalHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 1738 mSDtfsCounter, 370 mSolverCounterSat, 13.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.29ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=7, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 63.09ms AutomataMinimizationTime, 8 MinimizatonAttempts, 145 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 314.00ms SsaConstructionTime, 333.37ms SatisfiabilityAnalysisTime, 7524.79ms InterpolantComputationTime, 746 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 628 ConstructedInterpolants, 0 QuantifiedInterpolants, 1153 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2038 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 22:54:29,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_SFH_test2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 22:54:31,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:54:31,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:54:31,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:54:31,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:54:31,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:54:31,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:54:31,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:54:31,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:54:31,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:54:31,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:54:31,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:54:31,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:54:31,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:54:31,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:54:31,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:54:31,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:54:31,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:54:31,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:54:31,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:54:31,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:54:31,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:54:31,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:54:31,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:54:31,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:54:31,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:54:31,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:54:31,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:54:31,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:54:31,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:54:31,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:54:31,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:54:31,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:54:31,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:54:31,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:54:31,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:54:31,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:54:31,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:54:31,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:54:31,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:54:31,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:54:31,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-07 22:54:31,248 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:54:31,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:54:31,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:54:31,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:54:31,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:54:31,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:54:31,250 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:54:31,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:54:31,251 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:54:31,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:54:31,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:54:31,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:54:31,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:54:31,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:54:31,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:54:31,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:54:31,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:54:31,259 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 22:54:31,259 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 22:54:31,259 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:54:31,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:54:31,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:54:31,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:54:31,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 22:54:31,259 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2021-11-07 22:54:31,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:54:31,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:54:31,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:54:31,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:54:31,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:54:31,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-07 22:54:31,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65cc0e3f/3c0265d2e28243c3a1aaf3de5697775f/FLAG41de8108f [2021-11-07 22:54:32,010 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:54:32,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-07 22:54:32,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65cc0e3f/3c0265d2e28243c3a1aaf3de5697775f/FLAG41de8108f [2021-11-07 22:54:32,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65cc0e3f/3c0265d2e28243c3a1aaf3de5697775f [2021-11-07 22:54:32,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:54:32,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:54:32,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:54:32,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:54:32,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:54:32,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3b76cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32, skipping insertion in model container [2021-11-07 22:54:32,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:54:32,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:54:32,428 WARN L228 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_SFH_test2-2.i[37019,37032] [2021-11-07 22:54:32,528 WARN L228 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_SFH_test2-2.i[47352,47365] [2021-11-07 22:54:32,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:54:32,549 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:54:32,567 WARN L228 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_SFH_test2-2.i[37019,37032] [2021-11-07 22:54:32,609 WARN L228 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_SFH_test2-2.i[47352,47365] [2021-11-07 22:54:32,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:54:32,644 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:54:32,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32 WrapperNode [2021-11-07 22:54:32,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:54:32,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:54:32,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:54:32,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:54:32,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:54:32,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:54:32,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:54:32,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:54:32,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:54:32,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:54:32,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:54:32,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:54:32,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (1/1) ... [2021-11-07 22:54:32,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:54:32,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:54:32,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 22:54:32,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:54:32,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:54:35,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:54:35,897 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 22:54:35,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:54:35 BoogieIcfgContainer [2021-11-07 22:54:35,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:54:35,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:54:35,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:54:35,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:54:35,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:54:32" (1/3) ... [2021-11-07 22:54:35,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f10ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:54:35, skipping insertion in model container [2021-11-07 22:54:35,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:54:32" (2/3) ... [2021-11-07 22:54:35,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f10ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:54:35, skipping insertion in model container [2021-11-07 22:54:35,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:54:35" (3/3) ... [2021-11-07 22:54:35,905 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-2.i [2021-11-07 22:54:35,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:54:35,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 22:54:35,963 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:54:35,969 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 22:54:35,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 22:54:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 22:54:35,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:35,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:35,993 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:35,997 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-07 22:54:36,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:36,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715038215] [2021-11-07 22:54:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:36,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:36,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:36,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:36,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 22:54:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:36,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 22:54:36,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:36,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:54:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:36,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:54:36,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715038215] [2021-11-07 22:54:36,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715038215] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:36,197 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:36,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 22:54:36,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589326258] [2021-11-07 22:54:36,199 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:36,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:54:36,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:54:36,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:54:36,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:54:36,234 INFO L87 Difference]: Start difference. First operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:36,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:36,278 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-07 22:54:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:54:36,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 22:54:36,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:36,290 INFO L225 Difference]: With dead ends: 410 [2021-11-07 22:54:36,290 INFO L226 Difference]: Without dead ends: 173 [2021-11-07 22:54:36,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.07ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:54:36,296 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:36,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 3.61ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:54:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-07 22:54:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-07 22:54:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-07 22:54:36,337 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-07 22:54:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:36,337 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-07 22:54:36,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-07 22:54:36,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 22:54:36,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:36,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:36,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 22:54:36,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:54:36,548 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:36,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:36,548 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-07 22:54:36,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:36,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86718644] [2021-11-07 22:54:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:36,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:36,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:36,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:36,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 22:54:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:36,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:54:36,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:36,697 INFO L388 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 [2021-11-07 22:54:36,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 22:54:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:36,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:54:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:36,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:54:36,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86718644] [2021-11-07 22:54:36,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86718644] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:36,930 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:36,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 22:54:36,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650787029] [2021-11-07 22:54:36,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:36,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 22:54:36,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:54:36,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 22:54:36,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:54:36,932 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:38,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:54:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:39,498 INFO L93 Difference]: Finished difference Result 459 states and 596 transitions. [2021-11-07 22:54:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 22:54:39,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 22:54:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:39,501 INFO L225 Difference]: With dead ends: 459 [2021-11-07 22:54:39,501 INFO L226 Difference]: Without dead ends: 376 [2021-11-07 22:54:39,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.69ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 22:54:39,503 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 411 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2351.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.15ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2510.52ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:39,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 800 Invalid, 211 Unknown, 0 Unchecked, 8.15ms Time], IncrementalHoareTripleChecker [7 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 2510.52ms Time] [2021-11-07 22:54:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-07 22:54:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 175. [2021-11-07 22:54:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 174 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:39,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-07 22:54:39,511 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2021-11-07 22:54:39,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:39,512 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-07 22:54:39,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:39,512 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-07 22:54:39,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:54:39,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:39,514 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:39,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:39,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:54:39,729 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:39,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2021-11-07 22:54:39,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:39,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117560271] [2021-11-07 22:54:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:39,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:39,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:39,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:39,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 22:54:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:39,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:54:39,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:40,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:54:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:40,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:54:40,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117560271] [2021-11-07 22:54:40,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117560271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:40,351 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:40,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 22:54:40,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160045682] [2021-11-07 22:54:40,351 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:40,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 22:54:40,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:54:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 22:54:40,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:54:40,353 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:40,473 INFO L93 Difference]: Finished difference Result 355 states and 462 transitions. [2021-11-07 22:54:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:54:40,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 96 [2021-11-07 22:54:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:40,474 INFO L225 Difference]: With dead ends: 355 [2021-11-07 22:54:40,474 INFO L226 Difference]: Without dead ends: 184 [2021-11-07 22:54:40,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.98ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:54:40,476 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 413 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.51ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:40,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 402 Invalid, 75 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [37 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 103.51ms Time] [2021-11-07 22:54:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-07 22:54:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2021-11-07 22:54:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 172 states have (on average 1.2906976744186047) internal successors, (222), 177 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 222 transitions. [2021-11-07 22:54:40,482 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 222 transitions. Word has length 96 [2021-11-07 22:54:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:40,482 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 222 transitions. [2021-11-07 22:54:40,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 222 transitions. [2021-11-07 22:54:40,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:54:40,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:40,483 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:40,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:40,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:54:40,684 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:40,685 INFO L85 PathProgramCache]: Analyzing trace with hash 890123355, now seen corresponding path program 1 times [2021-11-07 22:54:40,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:40,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053459893] [2021-11-07 22:54:40,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:40,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:40,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:40,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:40,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 22:54:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:40,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:54:40,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:41,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:54:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:41,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:54:41,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053459893] [2021-11-07 22:54:41,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053459893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:41,582 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:41,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 22:54:41,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596734146] [2021-11-07 22:54:41,582 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:41,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:54:41,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:54:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:54:41,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:54:41,584 INFO L87 Difference]: Start difference. First operand 178 states and 222 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:42,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:42,003 INFO L93 Difference]: Finished difference Result 459 states and 570 transitions. [2021-11-07 22:54:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:54:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-07 22:54:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:42,004 INFO L225 Difference]: With dead ends: 459 [2021-11-07 22:54:42,005 INFO L226 Difference]: Without dead ends: 285 [2021-11-07 22:54:42,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:54:42,006 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 97 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 378.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 410.21ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:42,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 452 Invalid, 16 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 410.21ms Time] [2021-11-07 22:54:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-07 22:54:42,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 273. [2021-11-07 22:54:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 267 states have (on average 1.2883895131086143) internal successors, (344), 272 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 344 transitions. [2021-11-07 22:54:42,013 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 344 transitions. Word has length 96 [2021-11-07 22:54:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:42,014 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 344 transitions. [2021-11-07 22:54:42,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 344 transitions. [2021-11-07 22:54:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 22:54:42,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:42,015 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:54:42,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:42,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:54:42,226 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2000987094, now seen corresponding path program 1 times [2021-11-07 22:54:42,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:42,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191668082] [2021-11-07 22:54:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:42,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:42,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:42,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:42,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 22:54:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:42,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:54:42,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:42,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:54:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:54:42,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:54:42,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191668082] [2021-11-07 22:54:42,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191668082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:42,749 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:42,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 22:54:42,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946900324] [2021-11-07 22:54:42,749 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:42,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:54:42,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:54:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:54:42,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:54:42,750 INFO L87 Difference]: Start difference. First operand 273 states and 344 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:42,796 INFO L93 Difference]: Finished difference Result 504 states and 645 transitions. [2021-11-07 22:54:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:54:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 103 [2021-11-07 22:54:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:42,798 INFO L225 Difference]: With dead ends: 504 [2021-11-07 22:54:42,798 INFO L226 Difference]: Without dead ends: 276 [2021-11-07 22:54:42,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.47ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:54:42,800 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.61ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:42,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 14 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 38.61ms Time] [2021-11-07 22:54:42,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-07 22:54:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-07 22:54:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 270 states have (on average 1.2851851851851852) internal successors, (347), 275 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 347 transitions. [2021-11-07 22:54:42,813 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 347 transitions. Word has length 103 [2021-11-07 22:54:42,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:42,813 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 347 transitions. [2021-11-07 22:54:42,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 347 transitions. [2021-11-07 22:54:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 22:54:42,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:42,815 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 22:54:42,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:43,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:54:43,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:43,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:43,025 INFO L85 PathProgramCache]: Analyzing trace with hash 416871670, now seen corresponding path program 1 times [2021-11-07 22:54:43,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:43,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159811184] [2021-11-07 22:54:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:43,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:43,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:43,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:43,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 22:54:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:43,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:54:43,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 22:54:43,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:54:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 22:54:43,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:54:43,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159811184] [2021-11-07 22:54:43,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159811184] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:54:43,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:54:43,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-07 22:54:43,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761228511] [2021-11-07 22:54:43,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:54:43,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 22:54:43,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:54:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 22:54:43,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 22:54:43,604 INFO L87 Difference]: Start difference. First operand 276 states and 347 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:43,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:43,813 INFO L93 Difference]: Finished difference Result 513 states and 657 transitions. [2021-11-07 22:54:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 22:54:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 106 [2021-11-07 22:54:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:43,816 INFO L225 Difference]: With dead ends: 513 [2021-11-07 22:54:43,816 INFO L226 Difference]: Without dead ends: 282 [2021-11-07 22:54:43,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 127.84ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 22:54:43,817 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.41ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:43,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 827 Invalid, 52 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 136.41ms Time] [2021-11-07 22:54:43,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-07 22:54:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-11-07 22:54:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 276 states have (on average 1.2789855072463767) internal successors, (353), 281 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 353 transitions. [2021-11-07 22:54:43,824 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 353 transitions. Word has length 106 [2021-11-07 22:54:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:43,824 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 353 transitions. [2021-11-07 22:54:43,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 353 transitions. [2021-11-07 22:54:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 22:54:43,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:43,826 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 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] [2021-11-07 22:54:43,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:44,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:54:44,038 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:44,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1224332106, now seen corresponding path program 2 times [2021-11-07 22:54:44,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:44,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892800523] [2021-11-07 22:54:44,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:54:44,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:44,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:44,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:44,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 22:54:44,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:54:44,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:54:44,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:54:44,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 22:54:44,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:54:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 22:54:44,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:54:44,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892800523] [2021-11-07 22:54:44,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892800523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:44,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:44,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 22:54:44,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190846504] [2021-11-07 22:54:44,497 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:44,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 22:54:44,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:54:44,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 22:54:44,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:54:44,498 INFO L87 Difference]: Start difference. First operand 282 states and 353 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:44,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:44,587 INFO L93 Difference]: Finished difference Result 431 states and 555 transitions. [2021-11-07 22:54:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:54:44,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 112 [2021-11-07 22:54:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:44,591 INFO L225 Difference]: With dead ends: 431 [2021-11-07 22:54:44,593 INFO L226 Difference]: Without dead ends: 295 [2021-11-07 22:54:44,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.05ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:54:44,594 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 94 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.08ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.11ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:44,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 590 Invalid, 68 Unknown, 0 Unchecked, 1.08ms Time], IncrementalHoareTripleChecker [30 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 75.11ms Time] [2021-11-07 22:54:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-07 22:54:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 288. [2021-11-07 22:54:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.2163120567375887) internal successors, (343), 287 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 343 transitions. [2021-11-07 22:54:44,600 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 343 transitions. Word has length 112 [2021-11-07 22:54:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:44,601 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 343 transitions. [2021-11-07 22:54:44,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 343 transitions. [2021-11-07 22:54:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 22:54:44,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:44,602 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 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] [2021-11-07 22:54:44,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:44,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:54:44,810 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:44,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:44,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2125746730, now seen corresponding path program 1 times [2021-11-07 22:54:44,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:44,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982460123] [2021-11-07 22:54:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:44,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:44,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:44,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:44,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 22:54:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:45,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 22:54:45,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 22:54:45,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:54:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 22:54:45,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:54:45,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982460123] [2021-11-07 22:54:45,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982460123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:54:45,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:54:45,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-07 22:54:45,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801115738] [2021-11-07 22:54:45,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:54:45,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 22:54:45,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:54:45,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 22:54:45,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 22:54:45,765 INFO L87 Difference]: Start difference. First operand 288 states and 343 transitions. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:47,179 INFO L93 Difference]: Finished difference Result 543 states and 661 transitions. [2021-11-07 22:54:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 22:54:47,180 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 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 112 [2021-11-07 22:54:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:47,183 INFO L225 Difference]: With dead ends: 543 [2021-11-07 22:54:47,183 INFO L226 Difference]: Without dead ends: 300 [2021-11-07 22:54:47,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 776.27ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-07 22:54:47,184 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 862.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 935.30ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:47,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1753 Invalid, 165 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [45 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 935.30ms Time] [2021-11-07 22:54:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-07 22:54:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-11-07 22:54:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 1.2074829931972788) internal successors, (355), 299 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 355 transitions. [2021-11-07 22:54:47,192 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 355 transitions. Word has length 112 [2021-11-07 22:54:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:47,193 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 355 transitions. [2021-11-07 22:54:47,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 355 transitions. [2021-11-07 22:54:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 22:54:47,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:47,194 INFO L514 BasicCegarLoop]: trace histogram [14, 7, 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] [2021-11-07 22:54:47,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:47,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:54:47,404 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:47,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1333207466, now seen corresponding path program 2 times [2021-11-07 22:54:47,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:47,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996097277] [2021-11-07 22:54:47,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:54:47,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:47,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:47,406 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:47,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 22:54:47,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:54:47,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:54:47,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 22:54:47,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-07 22:54:47,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:54:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-07 22:54:48,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:54:48,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996097277] [2021-11-07 22:54:48,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996097277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:54:48,103 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:54:48,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 22:54:48,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051004322] [2021-11-07 22:54:48,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:54:48,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 22:54:48,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:54:48,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 22:54:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 22:54:48,104 INFO L87 Difference]: Start difference. First operand 300 states and 355 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:48,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:48,185 INFO L93 Difference]: Finished difference Result 435 states and 521 transitions. [2021-11-07 22:54:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:54:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 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 124 [2021-11-07 22:54:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:48,187 INFO L225 Difference]: With dead ends: 435 [2021-11-07 22:54:48,187 INFO L226 Difference]: Without dead ends: 293 [2021-11-07 22:54:48,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 60.20ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 22:54:48,188 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 149 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.35ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:48,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 832 Invalid, 86 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [14 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 71.35ms Time] [2021-11-07 22:54:48,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-07 22:54:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 288. [2021-11-07 22:54:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.1879432624113475) internal successors, (335), 287 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 335 transitions. [2021-11-07 22:54:48,194 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 335 transitions. Word has length 124 [2021-11-07 22:54:48,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:48,194 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 335 transitions. [2021-11-07 22:54:48,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:48,195 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 335 transitions. [2021-11-07 22:54:48,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 22:54:48,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:48,196 INFO L514 BasicCegarLoop]: trace histogram [14, 7, 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] [2021-11-07 22:54:48,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:48,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:54:48,404 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:48,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:48,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1075042028, now seen corresponding path program 1 times [2021-11-07 22:54:48,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:48,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596244368] [2021-11-07 22:54:48,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:54:48,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:48,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:48,406 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:48,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 22:54:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:54:48,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 22:54:48,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:54:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 22:54:49,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:54:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 22:54:50,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:54:50,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596244368] [2021-11-07 22:54:50,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596244368] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:54:50,113 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:54:50,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-07 22:54:50,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469088319] [2021-11-07 22:54:50,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:54:50,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 22:54:50,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:54:50,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 22:54:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-07 22:54:50,115 INFO L87 Difference]: Start difference. First operand 288 states and 335 transitions. Second operand has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:54:59,155 INFO L93 Difference]: Finished difference Result 555 states and 669 transitions. [2021-11-07 22:54:59,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 22:54:59,156 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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 124 [2021-11-07 22:54:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:54:59,157 INFO L225 Difference]: With dead ends: 555 [2021-11-07 22:54:59,157 INFO L226 Difference]: Without dead ends: 312 [2021-11-07 22:54:59,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3897.03ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 22:54:59,158 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5865.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.80ms SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6080.04ms IncrementalHoareTripleChecker+Time [2021-11-07 22:54:59,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3237 Invalid, 529 Unknown, 0 Unchecked, 5.80ms Time], IncrementalHoareTripleChecker [157 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 6080.04ms Time] [2021-11-07 22:54:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-07 22:54:59,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-07 22:54:59,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 306 states have (on average 1.173202614379085) internal successors, (359), 311 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 359 transitions. [2021-11-07 22:54:59,166 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 359 transitions. Word has length 124 [2021-11-07 22:54:59,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:54:59,166 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 359 transitions. [2021-11-07 22:54:59,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:54:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 359 transitions. [2021-11-07 22:54:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 22:54:59,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:54:59,168 INFO L514 BasicCegarLoop]: trace histogram [30, 15, 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] [2021-11-07 22:54:59,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 22:54:59,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:54:59,376 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:54:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:54:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1997207020, now seen corresponding path program 2 times [2021-11-07 22:54:59,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:54:59,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851561941] [2021-11-07 22:54:59,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:54:59,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:54:59,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:54:59,378 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:54:59,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 22:54:59,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:54:59,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:54:59,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 22:54:59,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:55:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-07 22:55:00,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:55:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-07 22:55:03,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:55:03,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851561941] [2021-11-07 22:55:03,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851561941] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:55:03,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:55:03,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-07 22:55:03,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314793209] [2021-11-07 22:55:03,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:55:03,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 22:55:03,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:55:03,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 22:55:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=933, Invalid=3099, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 22:55:03,510 INFO L87 Difference]: Start difference. First operand 312 states and 359 transitions. Second operand has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:56:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:56:07,361 INFO L93 Difference]: Finished difference Result 609 states and 729 transitions. [2021-11-07 22:56:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 22:56:07,365 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 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 148 [2021-11-07 22:56:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:56:07,366 INFO L225 Difference]: With dead ends: 609 [2021-11-07 22:56:07,366 INFO L226 Difference]: Without dead ends: 342 [2021-11-07 22:56:07,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 25050.71ms TimeCoverageRelationStatistics Valid=2700, Invalid=6042, Unknown=0, NotChecked=0, Total=8742 [2021-11-07 22:56:07,369 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 6080 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41176.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6277 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.72ms SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41804.67ms IncrementalHoareTripleChecker+Time [2021-11-07 22:56:07,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6277 Invalid, 1619 Unknown, 0 Unchecked, 12.72ms Time], IncrementalHoareTripleChecker [555 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 41804.67ms Time] [2021-11-07 22:56:07,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-07 22:56:07,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-11-07 22:56:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 336 states have (on average 1.1577380952380953) internal successors, (389), 341 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:56:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 389 transitions. [2021-11-07 22:56:07,380 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 389 transitions. Word has length 148 [2021-11-07 22:56:07,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:56:07,380 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 389 transitions. [2021-11-07 22:56:07,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:56:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 389 transitions. [2021-11-07 22:56:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-07 22:56:07,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:56:07,382 INFO L514 BasicCegarLoop]: trace histogram [44, 31, 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] [2021-11-07 22:56:07,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 22:56:07,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:56:07,597 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:56:07,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:56:07,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1100843084, now seen corresponding path program 3 times [2021-11-07 22:56:07,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:56:07,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439889761] [2021-11-07 22:56:07,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 22:56:07,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:56:07,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:56:07,599 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:56:07,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 22:56:07,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 22:56:07,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:56:07,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:56:07,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:56:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2021-11-07 22:56:08,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:56:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2021-11-07 22:56:08,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:56:08,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439889761] [2021-11-07 22:56:08,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439889761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:56:08,662 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:56:08,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 22:56:08,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548080617] [2021-11-07 22:56:08,662 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:56:08,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:56:08,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:56:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:56:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:56:08,663 INFO L87 Difference]: Start difference. First operand 342 states and 389 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:56:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:56:10,852 INFO L93 Difference]: Finished difference Result 588 states and 667 transitions. [2021-11-07 22:56:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:56:10,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 178 [2021-11-07 22:56:10,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:56:10,854 INFO L225 Difference]: With dead ends: 588 [2021-11-07 22:56:10,854 INFO L226 Difference]: Without dead ends: 291 [2021-11-07 22:56:10,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:56:10,855 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 284 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2058.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2155.19ms IncrementalHoareTripleChecker+Time [2021-11-07 22:56:10,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 243 Invalid, 52 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 2155.19ms Time] [2021-11-07 22:56:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-07 22:56:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-11-07 22:56:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 285 states have (on average 1.1403508771929824) internal successors, (325), 290 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:56:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 325 transitions. [2021-11-07 22:56:10,866 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 325 transitions. Word has length 178 [2021-11-07 22:56:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:56:10,866 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 325 transitions. [2021-11-07 22:56:10,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:56:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 325 transitions. [2021-11-07 22:56:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-07 22:56:10,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:56:10,868 INFO L514 BasicCegarLoop]: trace histogram [44, 31, 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] [2021-11-07 22:56:10,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 22:56:11,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:56:11,079 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:56:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:56:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1442706610, now seen corresponding path program 1 times [2021-11-07 22:56:11,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:56:11,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020863417] [2021-11-07 22:56:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:56:11,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:56:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:56:11,081 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:56:11,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 22:56:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:56:11,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 22:56:11,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:56:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 22:56:12,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:56:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 22:56:15,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:56:15,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020863417] [2021-11-07 22:56:15,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020863417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:56:15,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:56:15,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 22:56:15,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811924980] [2021-11-07 22:56:15,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:56:15,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 22:56:15,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:56:15,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 22:56:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 22:56:15,718 INFO L87 Difference]: Start difference. First operand 291 states and 325 transitions. Second operand has 66 states, 66 states have (on average 2.6515151515151514) internal successors, (175), 66 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:57:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:57:20,457 INFO L93 Difference]: Finished difference Result 489 states and 584 transitions. [2021-11-07 22:57:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 22:57:20,457 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.6515151515151514) internal successors, (175), 66 states have internal predecessors, (175), 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 185 [2021-11-07 22:57:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:57:20,458 INFO L225 Difference]: With dead ends: 489 [2021-11-07 22:57:20,458 INFO L226 Difference]: Without dead ends: 324 [2021-11-07 22:57:20,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 25227.82ms TimeCoverageRelationStatistics Valid=3199, Invalid=6113, Unknown=0, NotChecked=0, Total=9312 [2021-11-07 22:57:20,461 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 6426 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42019.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6622 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.63ms SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42693.38ms IncrementalHoareTripleChecker+Time [2021-11-07 22:57:20,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6622 Invalid, 1927 Unknown, 0 Unchecked, 10.63ms Time], IncrementalHoareTripleChecker [591 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 42693.38ms Time] [2021-11-07 22:57:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-07 22:57:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2021-11-07 22:57:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 318 states have (on average 1.1257861635220126) internal successors, (358), 323 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:57:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 358 transitions. [2021-11-07 22:57:20,483 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 358 transitions. Word has length 185 [2021-11-07 22:57:20,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:57:20,483 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 358 transitions. [2021-11-07 22:57:20,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.6515151515151514) internal successors, (175), 66 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:57:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 358 transitions. [2021-11-07 22:57:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-07 22:57:20,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:57:20,485 INFO L514 BasicCegarLoop]: trace histogram [64, 44, 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] [2021-11-07 22:57:20,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 22:57:20,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 22:57:20,686 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 22:57:20,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:57:20,686 INFO L85 PathProgramCache]: Analyzing trace with hash 670930938, now seen corresponding path program 2 times [2021-11-07 22:57:20,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:57:20,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320426961] [2021-11-07 22:57:20,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:57:20,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:57:20,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:57:20,688 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 22:57:20,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 22:57:21,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:57:21,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:57:21,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-07 22:57:21,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:57:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 22:57:24,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:57:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 22:57:34,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:57:34,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320426961] [2021-11-07 22:57:34,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320426961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:57:34,414 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:57:34,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 132 [2021-11-07 22:57:34,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111123930] [2021-11-07 22:57:34,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:57:34,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-07 22:57:34,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:57:34,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-07 22:57:34,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4486, Invalid=12806, Unknown=0, NotChecked=0, Total=17292 [2021-11-07 22:57:34,419 INFO L87 Difference]: Start difference. First operand 324 states and 358 transitions. Second operand has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 23:02:22,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 23:02:22,649 INFO L93 Difference]: Finished difference Result 555 states and 683 transitions. [2021-11-07 23:02:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-07 23:02:22,650 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 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 218 [2021-11-07 23:02:22,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 23:02:22,651 INFO L225 Difference]: With dead ends: 555 [2021-11-07 23:02:22,651 INFO L226 Difference]: Without dead ends: 390 [2021-11-07 23:02:22,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 190020.92ms TimeCoverageRelationStatistics Valid=12934, Invalid=25286, Unknown=0, NotChecked=0, Total=38220 [2021-11-07 23:02:22,656 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 13041 mSDsCounter, 0 mSdLazyCounter, 4795 mSolverCounterSat, 1119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107535.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13237 SdHoareTripleChecker+Invalid, 5914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.92ms SdHoareTripleChecker+Time, 1119 IncrementalHoareTripleChecker+Valid, 4795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109744.28ms IncrementalHoareTripleChecker+Time [2021-11-07 23:02:22,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13237 Invalid, 5914 Unknown, 0 Unchecked, 25.92ms Time], IncrementalHoareTripleChecker [1119 Valid, 4795 Invalid, 0 Unknown, 0 Unchecked, 109744.28ms Time] [2021-11-07 23:02:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-07 23:02:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2021-11-07 23:02:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 384 states have (on average 1.1041666666666667) internal successors, (424), 389 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 23:02:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 424 transitions. [2021-11-07 23:02:22,686 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 424 transitions. Word has length 218 [2021-11-07 23:02:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 23:02:22,687 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 424 transitions. [2021-11-07 23:02:22,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 23:02:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 424 transitions. [2021-11-07 23:02:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 23:02:22,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 23:02:22,689 INFO L514 BasicCegarLoop]: trace histogram [130, 44, 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] [2021-11-07 23:02:22,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 23:02:22,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 23:02:22,906 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 23:02:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 23:02:22,907 INFO L85 PathProgramCache]: Analyzing trace with hash 249758330, now seen corresponding path program 3 times [2021-11-07 23:02:22,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 23:02:22,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366504718] [2021-11-07 23:02:22,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 23:02:22,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 23:02:22,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 23:02:22,908 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 23:02:22,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 23:04:07,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 67 check-sat command(s) [2021-11-07 23:04:07,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 23:04:07,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 134 conjunts are in the unsatisfiable core [2021-11-07 23:04:07,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 23:04:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9507 backedges. 2 proven. 8515 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 23:04:16,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 23:05:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9507 backedges. 2 proven. 8515 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 23:05:22,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 23:05:22,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366504718] [2021-11-07 23:05:22,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366504718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 23:05:22,129 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 23:05:22,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 264 [2021-11-07 23:05:22,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129385767] [2021-11-07 23:05:22,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 23:05:22,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2021-11-07 23:05:22,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 23:05:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2021-11-07 23:05:22,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17686, Invalid=51746, Unknown=0, NotChecked=0, Total=69432 [2021-11-07 23:05:22,138 INFO L87 Difference]: Start difference. First operand 390 states and 424 transitions. Second operand has 264 states, 264 states have (on average 1.4128787878787878) internal successors, (373), 264 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 23:06:15,827 WARN L227 SmtUtils]: Spent 43.66s on a formula simplification. DAG size of input: 652 DAG size of output: 566 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 23:06:17,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:22,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:26,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:27,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:29,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:30,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:31,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:33,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:35,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:39,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:41,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:45,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:47,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:49,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:52,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:55,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:57,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:06:59,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:00,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:01,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:02,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:03,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:05,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:07,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:09,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:11,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:13,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:14,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:16,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:17,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:21,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:23,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:24,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:28,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:31,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:34,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:35,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:39,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:40,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:42,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:43,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:44,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:47,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:49,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:52,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:56,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:07:58,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:00,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:03,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:05,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:06,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:08,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:10,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:11,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:13,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:15,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:16,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:17,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:19,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 23:08:20,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15