./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_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_OAT_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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 22:07:24,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:07:24,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:07:24,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:07:24,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:07:24,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:07:24,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:07:24,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:07:24,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:07:24,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:07:24,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:07:24,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:07:24,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:07:24,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:07:24,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:07:24,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:07:24,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:07:24,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:07:24,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:07:24,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:07:24,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:07:24,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:07:24,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:07:24,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:07:24,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:07:24,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:07:24,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:07:24,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:07:24,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:07:24,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:07:24,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:07:24,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:07:24,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:07:24,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:07:24,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:07:24,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:07:24,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:07:24,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:07:24,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:07:24,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:07:24,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:07:24,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 22:07:24,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:07:24,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:07:24,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:07:24,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:07:24,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:07:24,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:07:24,326 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:07:24,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:07:24,326 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:07:24,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 22:07:24,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:07:24,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:07:24,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:07:24,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:07:24,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:07:24,327 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:07:24,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:07:24,328 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:07:24,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:07:24,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:07:24,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:07:24,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:07:24,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:07:24,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:07:24,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:07:24,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:07:24,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 22:07:24,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 22:07:24,329 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:07:24,329 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:07:24,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:07:24,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:07:24,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2021-11-07 22:07:24,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:07:24,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:07:24,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:07:24,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:07:24,505 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:07:24,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-07 22:07:24,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c79bf563f/c6f8e63b64684f7e90f4765aa04012a8/FLAG0c46fd8c5 [2021-11-07 22:07:25,001 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:07:25,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-07 22:07:25,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c79bf563f/c6f8e63b64684f7e90f4765aa04012a8/FLAG0c46fd8c5 [2021-11-07 22:07:25,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c79bf563f/c6f8e63b64684f7e90f4765aa04012a8 [2021-11-07 22:07:25,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:07:25,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:07:25,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:07:25,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:07:25,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:07:25,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:25,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b521dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25, skipping insertion in model container [2021-11-07 22:07:25,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:25,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:07:25,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:07:25,696 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_OAT_test2-2.i[37019,37032] [2021-11-07 22:07:25,797 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_OAT_test2-2.i[47352,47365] [2021-11-07 22:07:25,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:07:25,829 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:07:25,856 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_OAT_test2-2.i[37019,37032] [2021-11-07 22:07:25,910 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_OAT_test2-2.i[47352,47365] [2021-11-07 22:07:25,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:07:25,956 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:07:25,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25 WrapperNode [2021-11-07 22:07:25,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:07:25,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:07:25,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:07:25,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:07:25,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:26,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:26,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:07:26,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:07:26,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:07:26,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:07:26,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:26,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:26,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:26,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:26,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:26,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:26,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:26,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:07:26,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:07:26,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:07:26,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:07:26,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (1/1) ... [2021-11-07 22:07:26,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:07:26,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:26,152 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 22:07:26,163 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 22:07:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:07:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 22:07:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:07:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:07:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 22:07:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 22:07:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:07:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:07:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 22:07:26,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:07:26,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:07:27,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:07:27,108 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 22:07:27,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:07:27 BoogieIcfgContainer [2021-11-07 22:07:27,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:07:27,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:07:27,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:07:27,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:07:27,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:07:25" (1/3) ... [2021-11-07 22:07:27,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f81d776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:07:27, skipping insertion in model container [2021-11-07 22:07:27,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:25" (2/3) ... [2021-11-07 22:07:27,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f81d776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:07:27, skipping insertion in model container [2021-11-07 22:07:27,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:07:27" (3/3) ... [2021-11-07 22:07:27,117 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2021-11-07 22:07:27,120 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:07:27,120 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 22:07:27,157 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:07:27,162 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 22:07:27,162 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 22:07:27,184 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 22:07:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 22:07:27,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:27,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:07:27,190 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 22:07:27,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:27,193 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-07 22:07:27,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:27,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279354882] [2021-11-07 22:07:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:27,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:27,329 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 22:07:27,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:27,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279354882] [2021-11-07 22:07:27,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279354882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:27,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:27,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 22:07:27,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405583675] [2021-11-07 22:07:27,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:27,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:07:27,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:27,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:07:27,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:07:27,358 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 22:07:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:27,400 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-07 22:07:27,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:07:27,402 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 22:07:27,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:27,410 INFO L225 Difference]: With dead ends: 410 [2021-11-07 22:07:27,410 INFO L226 Difference]: Without dead ends: 173 [2021-11-07 22:07:27,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:07:27,415 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, 2.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:27,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 2.87ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:07:27,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-07 22:07:27,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-07 22:07:27,455 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 22:07:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-07 22:07:27,459 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-07 22:07:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:27,459 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-07 22:07:27,459 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 22:07:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-07 22:07:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 22:07:27,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:27,461 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 22:07:27,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 22:07:27,462 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 22:07:27,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:27,463 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-07 22:07:27,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:27,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026660857] [2021-11-07 22:07:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:27,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:27,567 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 22:07:27,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:27,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026660857] [2021-11-07 22:07:27,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026660857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:27,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:27,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:07:27,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214751402] [2021-11-07 22:07:27,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:27,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:07:27,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:07:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:27,572 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 22:07:27,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:27,847 INFO L93 Difference]: Finished difference Result 377 states and 490 transitions. [2021-11-07 22:07:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:27,848 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 22:07:27,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:27,849 INFO L225 Difference]: With dead ends: 377 [2021-11-07 22:07:27,849 INFO L226 Difference]: Without dead ends: 294 [2021-11-07 22:07:27,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:27,851 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 153 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 205.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.71ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 246.70ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:27,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 534 Invalid, 142 Unknown, 0 Unchecked, 4.71ms Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 246.70ms Time] [2021-11-07 22:07:27,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-07 22:07:27,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 175. [2021-11-07 22:07:27,858 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 22:07:27,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-07 22:07:27,858 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2021-11-07 22:07:27,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:27,859 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-07 22:07:27,859 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 22:07:27,859 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-07 22:07:27,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:07:27,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:27,861 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 22:07:27,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 22:07:27,861 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 22:07:27,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:27,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2021-11-07 22:07:27,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:27,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335817740] [2021-11-07 22:07:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:27,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:27,876 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:27,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410544056] [2021-11-07 22:07:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:27,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:27,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:27,878 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 22:07:27,879 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 22:07:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:28,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:28,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:28,230 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 22:07:28,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:28,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:28,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335817740] [2021-11-07 22:07:28,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:28,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410544056] [2021-11-07 22:07:28,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410544056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:28,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:28,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:07:28,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718270676] [2021-11-07 22:07:28,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:28,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:07:28,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:28,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:07:28,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:28,233 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 22:07:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:28,284 INFO L93 Difference]: Finished difference Result 367 states and 481 transitions. [2021-11-07 22:07:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:07:28,284 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 22:07:28,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:28,285 INFO L225 Difference]: With dead ends: 367 [2021-11-07 22:07:28,286 INFO L226 Difference]: Without dead ends: 196 [2021-11-07 22:07:28,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:28,291 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.74ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.72ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:28,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 395 Invalid, 72 Unknown, 0 Unchecked, 0.74ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 45.72ms Time] [2021-11-07 22:07:28,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-07 22:07:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-11-07 22:07:28,309 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 22:07:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 247 transitions. [2021-11-07 22:07:28,309 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 247 transitions. Word has length 96 [2021-11-07 22:07:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:28,319 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 247 transitions. [2021-11-07 22:07:28,320 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 22:07:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 247 transitions. [2021-11-07 22:07:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:07:28,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:28,324 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 22:07:28,342 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 22:07:28,532 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 22:07:28,533 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 22:07:28,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:28,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1343744819, now seen corresponding path program 1 times [2021-11-07 22:07:28,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:28,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131873785] [2021-11-07 22:07:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:28,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:28,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:28,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290424303] [2021-11-07 22:07:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:28,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:28,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:28,547 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 22:07:28,548 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 22:07:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:28,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:28,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:28,820 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 22:07:28,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:28,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:28,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131873785] [2021-11-07 22:07:28,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:28,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290424303] [2021-11-07 22:07:28,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290424303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:28,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:28,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:07:28,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085301313] [2021-11-07 22:07:28,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:28,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:07:28,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:28,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:07:28,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:28,824 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 22:07:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:28,873 INFO L93 Difference]: Finished difference Result 298 states and 384 transitions. [2021-11-07 22:07:28,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:07:28,874 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 22:07:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:28,875 INFO L225 Difference]: With dead ends: 298 [2021-11-07 22:07:28,875 INFO L226 Difference]: Without dead ends: 216 [2021-11-07 22:07:28,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:28,876 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.90ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:28,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 395 Invalid, 72 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 43.90ms Time] [2021-11-07 22:07:28,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-07 22:07:28,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-11-07 22:07:28,880 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 22:07:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 267 transitions. [2021-11-07 22:07:28,881 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 267 transitions. Word has length 96 [2021-11-07 22:07:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:28,881 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 267 transitions. [2021-11-07 22:07:28,882 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 22:07:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 267 transitions. [2021-11-07 22:07:28,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:07:28,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:28,883 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 22:07:28,902 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 22:07:29,087 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 22:07:29,088 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 22:07:29,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1663949871, now seen corresponding path program 1 times [2021-11-07 22:07:29,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:29,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273211090] [2021-11-07 22:07:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:29,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:29,101 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:29,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052000843] [2021-11-07 22:07:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:29,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:29,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:29,103 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 22:07:29,104 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 22:07:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:29,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:29,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:29,414 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 22:07:29,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:29,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:29,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273211090] [2021-11-07 22:07:29,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:29,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052000843] [2021-11-07 22:07:29,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052000843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:29,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:29,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:07:29,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964724012] [2021-11-07 22:07:29,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:29,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:07:29,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:29,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:07:29,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:29,417 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 22:07:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:29,488 INFO L93 Difference]: Finished difference Result 418 states and 522 transitions. [2021-11-07 22:07:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:29,488 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 22:07:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:29,489 INFO L225 Difference]: With dead ends: 418 [2021-11-07 22:07:29,489 INFO L226 Difference]: Without dead ends: 207 [2021-11-07 22:07:29,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:29,490 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 213 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.56ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:29,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 406 Invalid, 66 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 61.56ms Time] [2021-11-07 22:07:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-07 22:07:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2021-11-07 22:07:29,493 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 22:07:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2021-11-07 22:07:29,494 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 96 [2021-11-07 22:07:29,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:29,494 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2021-11-07 22:07:29,494 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 22:07:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2021-11-07 22:07:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:07:29,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:29,495 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 22:07:29,520 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 22:07:29,703 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 22:07:29,704 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 22:07:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:29,704 INFO L85 PathProgramCache]: Analyzing trace with hash 569918303, now seen corresponding path program 1 times [2021-11-07 22:07:29,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:29,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403985863] [2021-11-07 22:07:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:29,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:29,716 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:29,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949790215] [2021-11-07 22:07:29,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:29,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:29,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:29,723 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 22:07:29,727 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 22:07:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:29,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:29,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:29,979 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 22:07:29,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:29,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:29,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403985863] [2021-11-07 22:07:29,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:29,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949790215] [2021-11-07 22:07:29,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949790215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:29,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:29,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:07:29,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820700146] [2021-11-07 22:07:29,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:29,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:07:29,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:29,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:07:29,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:29,982 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 22:07:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:30,035 INFO L93 Difference]: Finished difference Result 295 states and 364 transitions. [2021-11-07 22:07:30,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:30,036 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 22:07:30,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:30,037 INFO L225 Difference]: With dead ends: 295 [2021-11-07 22:07:30,037 INFO L226 Difference]: Without dead ends: 193 [2021-11-07 22:07:30,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:30,038 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 96 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.05ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.86ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:30,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 496 Invalid, 66 Unknown, 0 Unchecked, 1.05ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 43.86ms Time] [2021-11-07 22:07:30,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-07 22:07:30,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2021-11-07 22:07:30,042 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 22:07:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2021-11-07 22:07:30,042 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 96 [2021-11-07 22:07:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:30,043 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2021-11-07 22:07:30,043 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 22:07:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2021-11-07 22:07:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:07:30,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:30,044 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 22:07:30,064 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 22:07:30,259 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 22:07:30,259 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 22:07:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:30,260 INFO L85 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2021-11-07 22:07:30,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:30,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89256280] [2021-11-07 22:07:30,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:30,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:30,269 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:30,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331044423] [2021-11-07 22:07:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:30,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:30,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:30,270 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 22:07:30,271 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 22:07:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:30,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:07:30,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:30,625 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 22:07:30,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:30,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:30,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89256280] [2021-11-07 22:07:30,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:30,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331044423] [2021-11-07 22:07:30,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331044423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:30,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:30,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:07:30,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647201624] [2021-11-07 22:07:30,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:30,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:07:30,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:30,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:07:30,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:30,628 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 22:07:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:30,665 INFO L93 Difference]: Finished difference Result 486 states and 579 transitions. [2021-11-07 22:07:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:07:30,665 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 22:07:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:30,666 INFO L225 Difference]: With dead ends: 486 [2021-11-07 22:07:30,666 INFO L226 Difference]: Without dead ends: 303 [2021-11-07 22:07:30,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:30,667 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 94 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.34ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:30,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 441 Invalid, 14 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 29.34ms Time] [2021-11-07 22:07:30,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-07 22:07:30,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2021-11-07 22:07:30,673 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 22:07:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2021-11-07 22:07:30,674 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 96 [2021-11-07 22:07:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:30,674 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2021-11-07 22:07:30,674 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 22:07:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2021-11-07 22:07:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 22:07:30,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:30,675 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 22:07:30,695 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 22:07:30,893 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 22:07:30,893 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 22:07:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2021-11-07 22:07:30,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:30,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519740354] [2021-11-07 22:07:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:30,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:30,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:30,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270219974] [2021-11-07 22:07:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:30,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:30,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:30,904 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 22:07:30,906 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 22:07:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:31,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:07:31,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:31,183 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 22:07:31,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:07:31,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:31,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519740354] [2021-11-07 22:07:31,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:31,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270219974] [2021-11-07 22:07:31,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270219974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:31,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:31,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:07:31,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432854351] [2021-11-07 22:07:31,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:31,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:07:31,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:07:31,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:07:31,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:31,186 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 22:07:31,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:31,598 INFO L93 Difference]: Finished difference Result 474 states and 571 transitions. [2021-11-07 22:07:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:31,599 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 22:07:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:31,600 INFO L225 Difference]: With dead ends: 474 [2021-11-07 22:07:31,600 INFO L226 Difference]: Without dead ends: 231 [2021-11-07 22:07:31,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:31,601 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 310 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 382.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 399.77ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:31,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 266 Invalid, 49 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 399.77ms Time] [2021-11-07 22:07:31,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-07 22:07:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-11-07 22:07:31,605 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 22:07:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 272 transitions. [2021-11-07 22:07:31,606 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 272 transitions. Word has length 103 [2021-11-07 22:07:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:31,606 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 272 transitions. [2021-11-07 22:07:31,606 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 22:07:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 272 transitions. [2021-11-07 22:07:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 22:07:31,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:31,607 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 22:07:31,627 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 22:07:31,814 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 22:07:31,814 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 22:07:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash 541560378, now seen corresponding path program 1 times [2021-11-07 22:07:31,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:07:31,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608936453] [2021-11-07 22:07:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:31,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:07:31,824 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:07:31,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266678354] [2021-11-07 22:07:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:31,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:07:31,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:31,826 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 22:07:31,827 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 22:07:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:31,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 22:07:31,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:32,011 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 22:07:32,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 22:07:32,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,048 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 22:07:32,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,090 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 22:07:32,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,767 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 22:07:32,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,774 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 22:07:32,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,826 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 22:07:32,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,835 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 22:07:32,860 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 22:07:32,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,870 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 22:07:32,882 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 22:07:32,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:32,895 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-07 22:07:32,895 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 22:07:34,089 INFO L354 Elim1Store]: treesize reduction 364, result has 11.9 percent of original size [2021-11-07 22:07:34,090 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 22:07:34,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:34,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:34,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:34,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 22:07:38,136 INFO L354 Elim1Store]: treesize reduction 7776, result has 3.0 percent of original size [2021-11-07 22:07:38,136 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 22:07:38,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:07:38,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608936453] [2021-11-07 22:07:38,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:07:38,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266678354] [2021-11-07 22:07:38,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-07 22:07:38,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:38,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 22:07:38,185 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-07 22:07:38,185 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 22:07:38,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-07 22:07:38,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-07 22:07:38,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-11-07 22:07:38,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-07 22:07:38,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-07 22:07:38,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-07 22:07:38,215 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 22:07:38,411 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 22:07:38,414 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:07:38,415 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 22:07:38,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:07:38 BoogieIcfgContainer [2021-11-07 22:07:38,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 22:07:38,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 22:07:38,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 22:07:38,442 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 22:07:38,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:07:27" (3/4) ... [2021-11-07 22:07:38,444 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 22:07:38,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 22:07:38,445 INFO L158 Benchmark]: Toolchain (without parser) took 13102.48ms. Allocated memory was 88.1MB in the beginning and 199.2MB in the end (delta: 111.1MB). Free memory was 58.4MB in the beginning and 139.6MB in the end (delta: -81.2MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2021-11-07 22:07:38,445 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 22:07:38,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.56ms. Allocated memory was 88.1MB in the beginning and 121.6MB in the end (delta: 33.6MB). Free memory was 58.2MB in the beginning and 74.1MB in the end (delta: -15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-07 22:07:38,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.20ms. Allocated memory is still 121.6MB. Free memory was 74.1MB in the beginning and 67.0MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-07 22:07:38,446 INFO L158 Benchmark]: Boogie Preprocessor took 64.98ms. Allocated memory is still 121.6MB. Free memory was 67.0MB in the beginning and 90.8MB in the end (delta: -23.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-07 22:07:38,446 INFO L158 Benchmark]: RCFGBuilder took 984.78ms. Allocated memory is still 121.6MB. Free memory was 90.8MB in the beginning and 76.7MB in the end (delta: 14.1MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2021-11-07 22:07:38,446 INFO L158 Benchmark]: TraceAbstraction took 11329.70ms. Allocated memory was 121.6MB in the beginning and 199.2MB in the end (delta: 77.6MB). Free memory was 76.7MB in the beginning and 140.7MB in the end (delta: -64.0MB). Peak memory consumption was 104.0MB. Max. memory is 16.1GB. [2021-11-07 22:07:38,446 INFO L158 Benchmark]: Witness Printer took 2.76ms. Allocated memory is still 199.2MB. Free memory was 140.7MB in the beginning and 139.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 22:07:38,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 613.56ms. Allocated memory was 88.1MB in the beginning and 121.6MB in the end (delta: 33.6MB). Free memory was 58.2MB in the beginning and 74.1MB in the end (delta: -15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.20ms. Allocated memory is still 121.6MB. Free memory was 74.1MB in the beginning and 67.0MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.98ms. Allocated memory is still 121.6MB. Free memory was 67.0MB in the beginning and 90.8MB in the end (delta: -23.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 984.78ms. Allocated memory is still 121.6MB. Free memory was 90.8MB in the beginning and 76.7MB in the end (delta: 14.1MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. * TraceAbstraction took 11329.70ms. Allocated memory was 121.6MB in the beginning and 199.2MB in the end (delta: 77.6MB). Free memory was 76.7MB in the beginning and 140.7MB in the end (delta: -64.0MB). Peak memory consumption was 104.0MB. Max. memory is 16.1GB. * Witness Printer took 2.76ms. Allocated memory is still 199.2MB. Free memory was 140.7MB in the beginning and 139.6MB in the end (delta: 1.0MB). 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: 11259.15ms, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 22.61ms, AutomataDifference: 1065.72ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 14.84ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 884 SdHoareTripleChecker+Valid, 870.84ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 884 mSDsluCounter, 3202 SdHoareTripleChecker+Invalid, 774.06ms 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, 13.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.03ms 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: 77.36ms AutomataMinimizationTime, 8 MinimizatonAttempts, 145 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 314.16ms SsaConstructionTime, 328.60ms SatisfiabilityAnalysisTime, 7385.72ms 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 22:07:38,475 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_OAT_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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 22:07:40,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:07:40,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:07:40,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:07:40,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:07:40,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:07:40,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:07:40,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:07:40,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:07:40,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:07:40,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:07:40,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:07:40,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:07:40,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:07:40,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:07:40,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:07:40,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:07:40,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:07:40,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:07:40,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:07:40,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:07:40,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:07:40,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:07:40,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:07:40,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:07:40,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:07:40,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:07:40,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:07:40,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:07:40,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:07:40,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:07:40,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:07:40,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:07:40,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:07:40,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:07:40,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:07:40,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:07:40,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:07:40,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:07:40,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:07:40,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:07:40,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-07 22:07:40,226 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:07:40,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:07:40,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:07:40,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:07:40,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:07:40,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:07:40,229 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:07:40,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:07:40,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:07:40,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:07:40,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:07:40,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:07:40,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:07:40,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:07:40,231 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 22:07:40,231 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 22:07:40,231 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:07:40,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:07:40,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:07:40,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:07:40,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:07:40,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:07:40,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:07:40,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:07:40,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:07:40,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:07:40,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:07:40,233 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 22:07:40,233 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 22:07:40,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:07:40,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:07:40,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:07:40,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:07:40,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 22:07:40,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2021-11-07 22:07:40,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:07:40,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:07:40,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:07:40,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:07:40,505 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:07:40,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-07 22:07:40,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9d048f2/210a25f857054231ae9e707672140bfb/FLAG1b05aef88 [2021-11-07 22:07:41,011 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:07:41,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-07 22:07:41,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9d048f2/210a25f857054231ae9e707672140bfb/FLAG1b05aef88 [2021-11-07 22:07:41,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9d048f2/210a25f857054231ae9e707672140bfb [2021-11-07 22:07:41,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:07:41,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:07:41,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:07:41,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:07:41,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:07:41,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6c8c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:41, skipping insertion in model container [2021-11-07 22:07:41,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:07:41" (1/1) ... [2021-11-07 22:07:41,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:07:41,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:07:41,762 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_OAT_test2-2.i[37019,37032] [2021-11-07 22:07:41,876 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_OAT_test2-2.i[47352,47365] [2021-11-07 22:07:41,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:07:41,905 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:07:41,929 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_OAT_test2-2.i[37019,37032] [2021-11-07 22:07:41,993 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_OAT_test2-2.i[47352,47365] [2021-11-07 22:07:42,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:07:42,040 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:07:42,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42 WrapperNode [2021-11-07 22:07:42,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:07:42,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:07:42,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:07:42,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:07:42,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (1/1) ... [2021-11-07 22:07:42,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (1/1) ... [2021-11-07 22:07:42,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:07:42,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:07:42,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:07:42,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:07:42,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (1/1) ... [2021-11-07 22:07:42,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (1/1) ... [2021-11-07 22:07:42,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (1/1) ... [2021-11-07 22:07:42,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (1/1) ... [2021-11-07 22:07:42,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (1/1) ... [2021-11-07 22:07:42,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (1/1) ... [2021-11-07 22:07:42,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (1/1) ... [2021-11-07 22:07:42,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:07:42,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:07:42,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:07:42,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:07:42,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (1/1) ... [2021-11-07 22:07:42,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:07:42,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:07:42,249 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 22:07:42,268 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 22:07:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 22:07:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 22:07:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:07:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 22:07:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:07:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:07:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 22:07:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 22:07:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:07:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:07:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:07:42,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:07:45,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:07:45,381 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 22:07:45,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:07:45 BoogieIcfgContainer [2021-11-07 22:07:45,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:07:45,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:07:45,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:07:45,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:07:45,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:07:41" (1/3) ... [2021-11-07 22:07:45,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b7e92bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:07:45, skipping insertion in model container [2021-11-07 22:07:45,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:07:42" (2/3) ... [2021-11-07 22:07:45,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b7e92bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:07:45, skipping insertion in model container [2021-11-07 22:07:45,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:07:45" (3/3) ... [2021-11-07 22:07:45,388 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2021-11-07 22:07:45,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:07:45,391 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 22:07:45,420 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:07:45,424 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 22:07:45,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 22:07:45,436 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 22:07:45,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 22:07:45,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:45,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:07:45,440 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 22:07:45,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:45,444 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-07 22:07:45,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:07:45,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917119878] [2021-11-07 22:07:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:45,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:07:45,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:07:45,456 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 22:07:45,470 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 22:07:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:45,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 22:07:45,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:45,616 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 22:07:45,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:07:45,633 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 22:07:45,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:07:45,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917119878] [2021-11-07 22:07:45,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917119878] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:45,635 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:45,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 22:07:45,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817506821] [2021-11-07 22:07:45,637 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:45,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:07:45,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:07:45,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:07:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:07:45,667 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 22:07:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:45,711 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-07 22:07:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:07:45,713 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 22:07:45,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:45,722 INFO L225 Difference]: With dead ends: 410 [2021-11-07 22:07:45,722 INFO L226 Difference]: Without dead ends: 173 [2021-11-07 22:07:45,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.08ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:07:45,730 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, 3.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:45,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 3.89ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:07:45,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-07 22:07:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-07 22:07:45,774 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 22:07:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-07 22:07:45,776 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-07 22:07:45,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:45,776 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-07 22:07:45,776 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 22:07:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-07 22:07:45,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 22:07:45,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:45,779 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 22:07:45,786 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 22:07:45,986 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 22:07:45,987 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 22:07:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-07 22:07:45,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:07:45,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833184477] [2021-11-07 22:07:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:45,993 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:07:45,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:07:45,999 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 22:07:46,000 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 22:07:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:46,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:46,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:46,185 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 22:07:46,205 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 22:07:46,300 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 22:07:46,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:07:46,417 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 22:07:46,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:07:46,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833184477] [2021-11-07 22:07:46,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833184477] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:46,418 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:46,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 22:07:46,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823368481] [2021-11-07 22:07:46,418 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:46,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 22:07:46,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:07:46,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 22:07:46,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:07:46,420 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 22:07:48,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:07:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:49,020 INFO L93 Difference]: Finished difference Result 459 states and 596 transitions. [2021-11-07 22:07:49,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 22:07:49,022 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 22:07:49,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:49,024 INFO L225 Difference]: With dead ends: 459 [2021-11-07 22:07:49,024 INFO L226 Difference]: Without dead ends: 376 [2021-11-07 22:07:49,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.25ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 22:07:49,025 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 411 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2366.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.02ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2557.45ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:49,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 800 Invalid, 211 Unknown, 0 Unchecked, 8.02ms Time], IncrementalHoareTripleChecker [7 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 2557.45ms Time] [2021-11-07 22:07:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-07 22:07:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 175. [2021-11-07 22:07:49,044 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 22:07:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-07 22:07:49,046 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2021-11-07 22:07:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:49,046 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-07 22:07:49,047 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 22:07:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-07 22:07:49,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:07:49,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:49,049 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 22:07:49,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 22:07:49,257 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 22:07:49,257 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 22:07:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2021-11-07 22:07:49,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:07:49,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130075906] [2021-11-07 22:07:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:49,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:07:49,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:07:49,260 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 22:07:49,261 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 22:07:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:49,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:49,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:49,676 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 22:07:49,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:07:49,885 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 22:07:49,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:07:49,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130075906] [2021-11-07 22:07:49,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130075906] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:49,886 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:49,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 22:07:49,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792980739] [2021-11-07 22:07:49,886 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:49,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 22:07:49,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:07:49,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 22:07:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:49,887 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 22:07:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:49,977 INFO L93 Difference]: Finished difference Result 355 states and 462 transitions. [2021-11-07 22:07:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:49,977 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 22:07:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:49,978 INFO L225 Difference]: With dead ends: 355 [2021-11-07 22:07:49,978 INFO L226 Difference]: Without dead ends: 184 [2021-11-07 22:07:49,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.00ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:07:49,979 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 413 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.62ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:49,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 402 Invalid, 75 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [37 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 73.62ms Time] [2021-11-07 22:07:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-07 22:07:49,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2021-11-07 22:07:49,985 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 22:07:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 222 transitions. [2021-11-07 22:07:49,986 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 222 transitions. Word has length 96 [2021-11-07 22:07:49,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:49,986 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 222 transitions. [2021-11-07 22:07:49,986 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 22:07:49,986 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 222 transitions. [2021-11-07 22:07:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:07:49,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:49,988 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 22:07:50,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 22:07:50,200 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 22:07:50,201 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 22:07:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:50,201 INFO L85 PathProgramCache]: Analyzing trace with hash 890123355, now seen corresponding path program 1 times [2021-11-07 22:07:50,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:07:50,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798940606] [2021-11-07 22:07:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:50,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:07:50,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:07:50,203 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 22:07:50,205 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 22:07:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:50,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:50,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:50,732 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 22:07:50,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:07:51,076 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 22:07:51,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:07:51,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798940606] [2021-11-07 22:07:51,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798940606] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:51,077 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:51,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 22:07:51,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114681164] [2021-11-07 22:07:51,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:51,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:07:51,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:07:51,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:07:51,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:51,078 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 22:07:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:51,535 INFO L93 Difference]: Finished difference Result 459 states and 570 transitions. [2021-11-07 22:07:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:07:51,536 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 22:07:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:51,537 INFO L225 Difference]: With dead ends: 459 [2021-11-07 22:07:51,537 INFO L226 Difference]: Without dead ends: 285 [2021-11-07 22:07:51,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:07:51,538 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 97 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 420.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 444.08ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:51,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 452 Invalid, 16 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 444.08ms Time] [2021-11-07 22:07:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-07 22:07:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 273. [2021-11-07 22:07:51,545 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 22:07:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 344 transitions. [2021-11-07 22:07:51,546 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 344 transitions. Word has length 96 [2021-11-07 22:07:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:51,546 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 344 transitions. [2021-11-07 22:07:51,546 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 22:07:51,546 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 344 transitions. [2021-11-07 22:07:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 22:07:51,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:51,547 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 22:07:51,561 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 22:07:51,757 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 22:07:51,758 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 22:07:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2000987094, now seen corresponding path program 1 times [2021-11-07 22:07:51,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:07:51,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10565388] [2021-11-07 22:07:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:51,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:07:51,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:07:51,760 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 22:07:51,762 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 22:07:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:51,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:51,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:52,107 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 22:07:52,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:07:52,263 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 22:07:52,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:07:52,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10565388] [2021-11-07 22:07:52,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10565388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:52,263 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:52,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 22:07:52,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563670045] [2021-11-07 22:07:52,263 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:52,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:07:52,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:07:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:07:52,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:52,264 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 22:07:52,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:52,308 INFO L93 Difference]: Finished difference Result 504 states and 645 transitions. [2021-11-07 22:07:52,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:52,308 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 22:07:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:52,310 INFO L225 Difference]: With dead ends: 504 [2021-11-07 22:07:52,310 INFO L226 Difference]: Without dead ends: 276 [2021-11-07 22:07:52,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.88ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:07:52,311 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.90ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:52,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 14 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 36.90ms Time] [2021-11-07 22:07:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-07 22:07:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-07 22:07:52,326 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 22:07:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 347 transitions. [2021-11-07 22:07:52,326 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 347 transitions. Word has length 103 [2021-11-07 22:07:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:52,327 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 347 transitions. [2021-11-07 22:07:52,327 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 22:07:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 347 transitions. [2021-11-07 22:07:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 22:07:52,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:52,328 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 22:07:52,341 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 22:07:52,539 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 22:07:52,539 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 22:07:52,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:52,540 INFO L85 PathProgramCache]: Analyzing trace with hash 416871670, now seen corresponding path program 1 times [2021-11-07 22:07:52,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:07:52,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015434759] [2021-11-07 22:07:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:52,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:07:52,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:07:52,541 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 22:07:52,542 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 22:07:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:52,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:07:52,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:52,918 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 22:07:52,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:07:53,121 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 22:07:53,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:07:53,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015434759] [2021-11-07 22:07:53,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015434759] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:07:53,122 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:07:53,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-07 22:07:53,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040519798] [2021-11-07 22:07:53,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:07:53,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 22:07:53,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:07:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 22:07:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 22:07:53,123 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 22:07:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:53,351 INFO L93 Difference]: Finished difference Result 513 states and 657 transitions. [2021-11-07 22:07:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 22:07:53,352 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 22:07:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:53,353 INFO L225 Difference]: With dead ends: 513 [2021-11-07 22:07:53,353 INFO L226 Difference]: Without dead ends: 282 [2021-11-07 22:07:53,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 126.83ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 22:07:53,354 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.80ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:53,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 827 Invalid, 52 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 147.80ms Time] [2021-11-07 22:07:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-07 22:07:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-11-07 22:07:53,359 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 22:07:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 353 transitions. [2021-11-07 22:07:53,359 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 353 transitions. Word has length 106 [2021-11-07 22:07:53,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:53,360 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 353 transitions. [2021-11-07 22:07:53,360 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 22:07:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 353 transitions. [2021-11-07 22:07:53,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 22:07:53,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:53,361 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 22:07:53,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 22:07:53,572 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 22:07:53,572 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 22:07:53,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1224332106, now seen corresponding path program 2 times [2021-11-07 22:07:53,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:07:53,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477441558] [2021-11-07 22:07:53,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:07:53,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:07:53,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:07:53,575 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 22:07:53,576 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 22:07:53,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:07:53,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:07:53,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:07:53,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:53,856 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 22:07:53,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:07:53,992 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 22:07:53,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:07:53,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477441558] [2021-11-07 22:07:53,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477441558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:53,993 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:53,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 22:07:53,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796668597] [2021-11-07 22:07:53,995 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:53,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 22:07:53,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:07:53,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 22:07:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:07:53,996 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 22:07:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:54,080 INFO L93 Difference]: Finished difference Result 431 states and 555 transitions. [2021-11-07 22:07:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:54,083 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 22:07:54,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:54,084 INFO L225 Difference]: With dead ends: 431 [2021-11-07 22:07:54,084 INFO L226 Difference]: Without dead ends: 295 [2021-11-07 22:07:54,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.79ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:07:54,085 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 94 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.49ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:54,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 590 Invalid, 68 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [30 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 70.49ms Time] [2021-11-07 22:07:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-07 22:07:54,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 288. [2021-11-07 22:07:54,094 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 22:07:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 343 transitions. [2021-11-07 22:07:54,094 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 343 transitions. Word has length 112 [2021-11-07 22:07:54,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:54,095 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 343 transitions. [2021-11-07 22:07:54,095 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 22:07:54,095 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 343 transitions. [2021-11-07 22:07:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 22:07:54,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:54,096 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 22:07:54,106 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 22:07:54,305 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 22:07:54,305 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 22:07:54,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2125746730, now seen corresponding path program 1 times [2021-11-07 22:07:54,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:07:54,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738728665] [2021-11-07 22:07:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:54,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:07:54,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:07:54,308 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 22:07:54,311 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 22:07:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:54,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 22:07:54,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:54,768 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 22:07:54,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:07:55,215 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 22:07:55,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:07:55,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738728665] [2021-11-07 22:07:55,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738728665] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:07:55,216 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:07:55,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-07 22:07:55,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822563624] [2021-11-07 22:07:55,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:07:55,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 22:07:55,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:07:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 22:07:55,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 22:07:55,217 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 22:07:56,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:56,547 INFO L93 Difference]: Finished difference Result 543 states and 661 transitions. [2021-11-07 22:07:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 22:07:56,548 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 22:07:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:56,549 INFO L225 Difference]: With dead ends: 543 [2021-11-07 22:07:56,549 INFO L226 Difference]: Without dead ends: 300 [2021-11-07 22:07:56,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 714.37ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-07 22:07:56,550 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 836.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 887.01ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:56,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1753 Invalid, 165 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [45 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 887.01ms Time] [2021-11-07 22:07:56,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-07 22:07:56,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-11-07 22:07:56,562 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 22:07:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 355 transitions. [2021-11-07 22:07:56,562 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 355 transitions. Word has length 112 [2021-11-07 22:07:56,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:56,563 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 355 transitions. [2021-11-07 22:07:56,563 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 22:07:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 355 transitions. [2021-11-07 22:07:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 22:07:56,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:56,566 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 22:07:56,580 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 22:07:56,777 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 22:07:56,778 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 22:07:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1333207466, now seen corresponding path program 2 times [2021-11-07 22:07:56,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:07:56,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002972564] [2021-11-07 22:07:56,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:07:56,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:07:56,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:07:56,780 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 22:07:56,781 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 22:07:56,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:07:56,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:07:56,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 22:07:56,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:57,115 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 22:07:57,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:07:57,497 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 22:07:57,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:07:57,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002972564] [2021-11-07 22:07:57,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002972564] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:07:57,498 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:07:57,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 22:07:57,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437398596] [2021-11-07 22:07:57,500 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:07:57,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 22:07:57,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:07:57,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 22:07:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 22:07:57,502 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 22:07:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:07:57,579 INFO L93 Difference]: Finished difference Result 435 states and 521 transitions. [2021-11-07 22:07:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:07:57,580 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 22:07:57,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:07:57,581 INFO L225 Difference]: With dead ends: 435 [2021-11-07 22:07:57,581 INFO L226 Difference]: Without dead ends: 293 [2021-11-07 22:07:57,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 49.13ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 22:07:57,582 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 149 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.52ms IncrementalHoareTripleChecker+Time [2021-11-07 22:07:57,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 832 Invalid, 86 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [14 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 68.52ms Time] [2021-11-07 22:07:57,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-07 22:07:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 288. [2021-11-07 22:07:57,587 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 22:07:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 335 transitions. [2021-11-07 22:07:57,588 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 335 transitions. Word has length 124 [2021-11-07 22:07:57,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:07:57,588 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 335 transitions. [2021-11-07 22:07:57,588 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 22:07:57,588 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 335 transitions. [2021-11-07 22:07:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 22:07:57,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:07:57,589 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 22:07:57,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 22:07:57,797 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 22:07:57,797 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 22:07:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:07:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1075042028, now seen corresponding path program 1 times [2021-11-07 22:07:57,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:07:57,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505087785] [2021-11-07 22:07:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:07:57,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:07:57,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:07:57,799 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 22:07:57,800 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 22:07:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:07:58,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 22:07:58,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:07:58,470 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 22:07:58,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:07:59,562 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 22:07:59,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:07:59,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505087785] [2021-11-07 22:07:59,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505087785] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:07:59,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:07:59,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-07 22:07:59,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446818641] [2021-11-07 22:07:59,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:07:59,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 22:07:59,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:07:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 22:07:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-07 22:07:59,564 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 22:08:08,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:08:08,706 INFO L93 Difference]: Finished difference Result 555 states and 669 transitions. [2021-11-07 22:08:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 22:08:08,707 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 22:08:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:08:08,708 INFO L225 Difference]: With dead ends: 555 [2021-11-07 22:08:08,708 INFO L226 Difference]: Without dead ends: 312 [2021-11-07 22:08:08,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 4080.73ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 22:08:08,709 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5841.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.15ms SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6054.79ms IncrementalHoareTripleChecker+Time [2021-11-07 22:08:08,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3237 Invalid, 529 Unknown, 0 Unchecked, 7.15ms Time], IncrementalHoareTripleChecker [157 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 6054.79ms Time] [2021-11-07 22:08:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-07 22:08:08,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-07 22:08:08,716 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 22:08:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 359 transitions. [2021-11-07 22:08:08,717 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 359 transitions. Word has length 124 [2021-11-07 22:08:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:08:08,717 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 359 transitions. [2021-11-07 22:08:08,717 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 22:08:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 359 transitions. [2021-11-07 22:08:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 22:08:08,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:08:08,719 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 22:08:08,733 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 22:08:08,931 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 22:08:08,931 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 22:08:08,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:08:08,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1997207020, now seen corresponding path program 2 times [2021-11-07 22:08:08,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:08:08,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043142536] [2021-11-07 22:08:08,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:08:08,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:08:08,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:08:08,933 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 22:08:08,934 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 22:08:09,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:08:09,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:08:09,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 22:08:09,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:08:10,255 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 22:08:10,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:08:13,347 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 22:08:13,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:08:13,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043142536] [2021-11-07 22:08:13,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043142536] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:08:13,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:08:13,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-07 22:08:13,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899629639] [2021-11-07 22:08:13,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:08:13,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 22:08:13,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:08:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 22:08:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=933, Invalid=3099, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 22:08:13,350 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 22:09:14,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:09:14,619 INFO L93 Difference]: Finished difference Result 609 states and 729 transitions. [2021-11-07 22:09:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 22:09:14,620 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 22:09:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:09:14,655 INFO L225 Difference]: With dead ends: 609 [2021-11-07 22:09:14,655 INFO L226 Difference]: Without dead ends: 342 [2021-11-07 22:09:14,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 24372.55ms TimeCoverageRelationStatistics Valid=2700, Invalid=6042, Unknown=0, NotChecked=0, Total=8742 [2021-11-07 22:09:14,670 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 6080 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39504.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6277 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.53ms SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40137.02ms IncrementalHoareTripleChecker+Time [2021-11-07 22:09:14,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6277 Invalid, 1619 Unknown, 0 Unchecked, 14.53ms Time], IncrementalHoareTripleChecker [555 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 40137.02ms Time] [2021-11-07 22:09:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-07 22:09:14,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-11-07 22:09:14,683 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 22:09:14,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 389 transitions. [2021-11-07 22:09:14,685 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 389 transitions. Word has length 148 [2021-11-07 22:09:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:09:14,686 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 389 transitions. [2021-11-07 22:09:14,686 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 22:09:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 389 transitions. [2021-11-07 22:09:14,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-07 22:09:14,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:09:14,688 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 22:09:14,706 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 22:09:14,899 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 22:09:14,899 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 22:09:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:09:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1100843084, now seen corresponding path program 3 times [2021-11-07 22:09:14,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:09:14,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902536414] [2021-11-07 22:09:14,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 22:09:14,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:09:14,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:09:14,902 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 22:09:14,903 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 22:09:15,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 22:09:15,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:09:15,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:09:15,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:09:15,552 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 22:09:15,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:09:15,973 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 22:09:15,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:09:15,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902536414] [2021-11-07 22:09:15,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902536414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 22:09:15,974 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:09:15,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 22:09:15,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017800896] [2021-11-07 22:09:15,974 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 22:09:15,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:09:15,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:09:15,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:09:15,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:09:15,975 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 22:09:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:09:18,152 INFO L93 Difference]: Finished difference Result 588 states and 667 transitions. [2021-11-07 22:09:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:09:18,153 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 22:09:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:09:18,154 INFO L225 Difference]: With dead ends: 588 [2021-11-07 22:09:18,154 INFO L226 Difference]: Without dead ends: 291 [2021-11-07 22:09:18,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:09:18,155 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 284 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2048.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2155.48ms IncrementalHoareTripleChecker+Time [2021-11-07 22:09:18,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 243 Invalid, 52 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 2155.48ms Time] [2021-11-07 22:09:18,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-07 22:09:18,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-11-07 22:09:18,164 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 22:09:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 325 transitions. [2021-11-07 22:09:18,165 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 325 transitions. Word has length 178 [2021-11-07 22:09:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:09:18,165 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 325 transitions. [2021-11-07 22:09:18,165 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 22:09:18,165 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 325 transitions. [2021-11-07 22:09:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-07 22:09:18,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:09:18,166 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 22:09:18,177 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 22:09:18,377 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 22:09:18,378 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 22:09:18,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:09:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1442706610, now seen corresponding path program 1 times [2021-11-07 22:09:18,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:09:18,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952525826] [2021-11-07 22:09:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:09:18,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:09:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:09:18,380 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 22:09:18,381 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 22:09:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:09:19,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 22:09:19,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:09:20,069 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 22:09:20,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:09:23,400 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 22:09:23,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:09:23,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952525826] [2021-11-07 22:09:23,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952525826] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:09:23,400 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:09:23,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 22:09:23,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971089517] [2021-11-07 22:09:23,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:09:23,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 22:09:23,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:09:23,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 22:09:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 22:09:23,402 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 22:10:34,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:10:34,067 INFO L93 Difference]: Finished difference Result 489 states and 584 transitions. [2021-11-07 22:10:34,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 22:10:34,068 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 22:10:34,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:10:34,069 INFO L225 Difference]: With dead ends: 489 [2021-11-07 22:10:34,069 INFO L226 Difference]: Without dead ends: 324 [2021-11-07 22:10:34,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 28910.38ms TimeCoverageRelationStatistics Valid=3199, Invalid=6113, Unknown=0, NotChecked=0, Total=9312 [2021-11-07 22:10:34,071 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 6426 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44390.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6622 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.29ms SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45183.12ms IncrementalHoareTripleChecker+Time [2021-11-07 22:10:34,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6622 Invalid, 1927 Unknown, 0 Unchecked, 14.29ms Time], IncrementalHoareTripleChecker [591 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 45183.12ms Time] [2021-11-07 22:10:34,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-07 22:10:34,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2021-11-07 22:10:34,099 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 22:10:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 358 transitions. [2021-11-07 22:10:34,100 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 358 transitions. Word has length 185 [2021-11-07 22:10:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:10:34,100 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 358 transitions. [2021-11-07 22:10:34,100 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 22:10:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 358 transitions. [2021-11-07 22:10:34,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-07 22:10:34,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:10:34,102 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 22:10:34,145 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 22:10:34,307 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 22:10:34,307 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 22:10:34,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:10:34,308 INFO L85 PathProgramCache]: Analyzing trace with hash 670930938, now seen corresponding path program 2 times [2021-11-07 22:10:34,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:10:34,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113552693] [2021-11-07 22:10:34,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:10:34,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:10:34,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:10:34,310 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 22:10:34,310 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 22:10:35,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:10:35,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:10:35,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-07 22:10:35,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:10:38,170 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 22:10:38,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:10:50,149 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 22:10:50,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:10:50,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113552693] [2021-11-07 22:10:50,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113552693] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:10:50,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:10:50,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 132 [2021-11-07 22:10:50,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075506824] [2021-11-07 22:10:50,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:10:50,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-07 22:10:50,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:10:50,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-07 22:10:50,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4486, Invalid=12806, Unknown=0, NotChecked=0, Total=17292 [2021-11-07 22:10:50,154 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 22:14:37,915 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 196 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 22:14:46,094 WARN L227 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 193 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 22:15:52,355 WARN L227 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 22:16:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:16:54,316 INFO L93 Difference]: Finished difference Result 555 states and 683 transitions. [2021-11-07 22:16:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-07 22:16:54,317 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 22:16:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:16:54,319 INFO L225 Difference]: With dead ends: 555 [2021-11-07 22:16:54,319 INFO L226 Difference]: Without dead ends: 390 [2021-11-07 22:16:54,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 251574.94ms TimeCoverageRelationStatistics Valid=12934, Invalid=25286, Unknown=0, NotChecked=0, Total=38220 [2021-11-07 22:16:54,324 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 13041 mSDsCounter, 0 mSdLazyCounter, 4795 mSolverCounterSat, 1119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122867.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13237 SdHoareTripleChecker+Invalid, 5914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.44ms SdHoareTripleChecker+Time, 1119 IncrementalHoareTripleChecker+Valid, 4795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125860.39ms IncrementalHoareTripleChecker+Time [2021-11-07 22:16:54,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13237 Invalid, 5914 Unknown, 0 Unchecked, 40.44ms Time], IncrementalHoareTripleChecker [1119 Valid, 4795 Invalid, 0 Unknown, 0 Unchecked, 125860.39ms Time] [2021-11-07 22:16:54,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-07 22:16:54,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2021-11-07 22:16:54,356 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 22:16:54,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 424 transitions. [2021-11-07 22:16:54,357 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 424 transitions. Word has length 218 [2021-11-07 22:16:54,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:16:54,357 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 424 transitions. [2021-11-07 22:16:54,357 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 22:16:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 424 transitions. [2021-11-07 22:16:54,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 22:16:54,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:16:54,359 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 22:16:54,383 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 22:16:54,571 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 22:16:54,571 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 22:16:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:16:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash 249758330, now seen corresponding path program 3 times [2021-11-07 22:16:54,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 22:16:54,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39063042] [2021-11-07 22:16:54,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 22:16:54,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 22:16:54,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 22:16:54,574 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 22:16:54,576 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 22:18:49,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 67 check-sat command(s) [2021-11-07 22:18:49,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:18:49,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 134 conjunts are in the unsatisfiable core [2021-11-07 22:18:49,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:19:00,463 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 22:19:00,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:20:20,793 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 22:20:20,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 22:20:20,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39063042] [2021-11-07 22:20:20,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39063042] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:20:20,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:20:20,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 264 [2021-11-07 22:20:20,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840263373] [2021-11-07 22:20:20,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:20:20,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2021-11-07 22:20:20,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 22:20:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2021-11-07 22:20:20,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17686, Invalid=51746, Unknown=0, NotChecked=0, Total=69432 [2021-11-07 22:20:20,827 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 22:21:25,703 WARN L227 SmtUtils]: Spent 52.49s 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 22:21:27,903 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 22:21:29,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:21:30,344 WARN L515 Checker$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 22:21:32,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:21:33,557 WARN L515 Checker$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 22:21:35,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:21:37,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:21:39,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:21:41,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 22:21:43,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15