./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_BER_test8-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 14:48:53,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 14:48:53,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 14:48:53,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 14:48:53,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 14:48:53,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 14:48:53,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 14:48:53,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 14:48:53,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 14:48:53,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 14:48:53,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 14:48:53,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 14:48:53,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 14:48:53,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 14:48:53,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 14:48:53,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 14:48:53,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 14:48:53,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 14:48:53,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 14:48:53,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 14:48:53,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 14:48:53,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 14:48:53,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 14:48:53,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 14:48:53,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 14:48:53,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 14:48:53,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 14:48:53,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 14:48:53,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 14:48:53,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 14:48:53,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 14:48:53,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 14:48:53,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 14:48:53,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 14:48:53,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 14:48:53,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 14:48:53,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 14:48:53,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 14:48:53,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 14:48:53,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 14:48:53,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 14:48:53,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 14:48:53,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 14:48:53,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 14:48:53,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 14:48:53,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 14:48:53,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 14:48:53,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 14:48:53,960 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 14:48:53,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 14:48:53,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 14:48:53,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 14:48:53,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 14:48:53,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 14:48:53,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 14:48:53,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 14:48:53,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 14:48:53,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 14:48:53,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 14:48:53,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 14:48:53,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 14:48:53,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 14:48:53,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 14:48:53,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 14:48:53,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 14:48:53,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 14:48:53,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 14:48:53,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 14:48:53,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 14:48:53,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 14:48:53,963 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 14:48:53,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 14:48:53,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 14:48:53,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 14:48:53,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a [2021-11-04 14:48:54,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 14:48:54,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 14:48:54,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 14:48:54,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 14:48:54,126 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 14:48:54,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-11-04 14:48:54,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d3e6330/dd6d031ec5b740c79b6a5c5171bc7502/FLAGca219f0be [2021-11-04 14:48:54,667 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 14:48:54,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-11-04 14:48:54,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d3e6330/dd6d031ec5b740c79b6a5c5171bc7502/FLAGca219f0be [2021-11-04 14:48:54,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d3e6330/dd6d031ec5b740c79b6a5c5171bc7502 [2021-11-04 14:48:54,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 14:48:54,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 14:48:54,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 14:48:54,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 14:48:54,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 14:48:54,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:48:54" (1/1) ... [2021-11-04 14:48:54,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7248a5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:54, skipping insertion in model container [2021-11-04 14:48:54,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:48:54" (1/1) ... [2021-11-04 14:48:54,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 14:48:54,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 14:48:55,047 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_BER_test8-1.i[33021,33034] [2021-11-04 14:48:55,136 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_BER_test8-1.i[45234,45247] [2021-11-04 14:48:55,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 14:48:55,149 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 14:48:55,174 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_BER_test8-1.i[33021,33034] [2021-11-04 14:48:55,228 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_BER_test8-1.i[45234,45247] [2021-11-04 14:48:55,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 14:48:55,283 INFO L208 MainTranslator]: Completed translation [2021-11-04 14:48:55,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55 WrapperNode [2021-11-04 14:48:55,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 14:48:55,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 14:48:55,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 14:48:55,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 14:48:55,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (1/1) ... [2021-11-04 14:48:55,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (1/1) ... [2021-11-04 14:48:55,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 14:48:55,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 14:48:55,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 14:48:55,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 14:48:55,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (1/1) ... [2021-11-04 14:48:55,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (1/1) ... [2021-11-04 14:48:55,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (1/1) ... [2021-11-04 14:48:55,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (1/1) ... [2021-11-04 14:48:55,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (1/1) ... [2021-11-04 14:48:55,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (1/1) ... [2021-11-04 14:48:55,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (1/1) ... [2021-11-04 14:48:55,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 14:48:55,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 14:48:55,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 14:48:55,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 14:48:55,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (1/1) ... [2021-11-04 14:48:55,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 14:48:55,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:48:55,501 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) [2021-11-04 14:48:55,556 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 [2021-11-04 14:48:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 14:48:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 14:48:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 14:48:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 14:48:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 14:48:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 14:48:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 14:48:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 14:48:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 14:48:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 14:48:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 14:48:56,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 14:48:56,057 INFO L299 CfgBuilder]: Removed 136 assume(true) statements. [2021-11-04 14:48:56,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:48:56 BoogieIcfgContainer [2021-11-04 14:48:56,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 14:48:56,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 14:48:56,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 14:48:56,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 14:48:56,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 02:48:54" (1/3) ... [2021-11-04 14:48:56,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7db2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:48:56, skipping insertion in model container [2021-11-04 14:48:56,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:48:55" (2/3) ... [2021-11-04 14:48:56,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7db2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:48:56, skipping insertion in model container [2021-11-04 14:48:56,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:48:56" (3/3) ... [2021-11-04 14:48:56,065 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-1.i [2021-11-04 14:48:56,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 14:48:56,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-04 14:48:56,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 14:48:56,125 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 [2021-11-04 14:48:56,125 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-04 14:48:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 270 states have (on average 1.7925925925925925) internal successors, (484), 301 states have internal predecessors, (484), 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) [2021-11-04 14:48:56,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-04 14:48:56,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:56,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:48:56,145 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-04 14:48:56,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash -109840528, now seen corresponding path program 1 times [2021-11-04 14:48:56,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:56,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73311195] [2021-11-04 14:48:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:56,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:48:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:48:56,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:48:56,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73311195] [2021-11-04 14:48:56,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73311195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:48:56,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:48:56,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 14:48:56,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483950366] [2021-11-04 14:48:56,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:48:56,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 14:48:56,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:48:56,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 14:48:56,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 14:48:56,317 INFO L87 Difference]: Start difference. First operand has 302 states, 270 states have (on average 1.7925925925925925) internal successors, (484), 301 states have internal predecessors, (484), 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) [2021-11-04 14:48:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:48:57,164 INFO L93 Difference]: Finished difference Result 602 states and 966 transitions. [2021-11-04 14:48:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 14:48:57,167 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 [2021-11-04 14:48:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:48:57,174 INFO L225 Difference]: With dead ends: 602 [2021-11-04 14:48:57,178 INFO L226 Difference]: Without dead ends: 298 [2021-11-04 14:48:57,180 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 [2021-11-04 14:48:57,183 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 699.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 792.13ms IncrementalHoareTripleChecker+Time [2021-11-04 14:48:57,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 387 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 792.13ms Time] [2021-11-04 14:48:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-04 14:48:57,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-11-04 14:48:57,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 267 states have (on average 1.4344569288389513) internal successors, (383), 297 states have internal predecessors, (383), 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) [2021-11-04 14:48:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 383 transitions. [2021-11-04 14:48:57,242 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 383 transitions. Word has length 9 [2021-11-04 14:48:57,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:48:57,242 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 383 transitions. [2021-11-04 14:48:57,242 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) [2021-11-04 14:48:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 383 transitions. [2021-11-04 14:48:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 14:48:57,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:57,245 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] [2021-11-04 14:48:57,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 14:48:57,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-04 14:48:57,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:57,248 INFO L85 PathProgramCache]: Analyzing trace with hash 518597571, now seen corresponding path program 1 times [2021-11-04 14:48:57,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:57,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310320667] [2021-11-04 14:48:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:57,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:48:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:48:57,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:48:57,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310320667] [2021-11-04 14:48:57,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310320667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:48:57,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:48:57,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:48:57,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231686506] [2021-11-04 14:48:57,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:48:57,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:48:57,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:48:57,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:48:57,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:48:57,347 INFO L87 Difference]: Start difference. First operand 298 states and 383 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) [2021-11-04 14:48:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:48:58,199 INFO L93 Difference]: Finished difference Result 619 states and 798 transitions. [2021-11-04 14:48:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:48:58,200 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 [2021-11-04 14:48:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:48:58,202 INFO L225 Difference]: With dead ends: 619 [2021-11-04 14:48:58,202 INFO L226 Difference]: Without dead ends: 474 [2021-11-04 14:48:58,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:48:58,204 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 660.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.04ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 809.06ms IncrementalHoareTripleChecker+Time [2021-11-04 14:48:58,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 1164 Unknown, 0 Unchecked, 6.04ms Time], IncrementalHoareTripleChecker [3 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 809.06ms Time] [2021-11-04 14:48:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-04 14:48:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 300. [2021-11-04 14:48:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 269 states have (on average 1.4312267657992566) internal successors, (385), 299 states have internal predecessors, (385), 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) [2021-11-04 14:48:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 385 transitions. [2021-11-04 14:48:58,223 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 385 transitions. Word has length 44 [2021-11-04 14:48:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:48:58,224 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 385 transitions. [2021-11-04 14:48:58,224 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) [2021-11-04 14:48:58,224 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 385 transitions. [2021-11-04 14:48:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-04 14:48:58,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:58,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:48:58,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 14:48:58,226 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-04 14:48:58,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:58,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1543983351, now seen corresponding path program 1 times [2021-11-04 14:48:58,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:58,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669740901] [2021-11-04 14:48:58,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:58,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:58,258 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:48:58,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220997666] [2021-11-04 14:48:58,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:58,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:58,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:48:58,263 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) [2021-11-04 14:48:58,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 14:48:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:48:58,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:48:58,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:48:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:48:58,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:48:58,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:48:58,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669740901] [2021-11-04 14:48:58,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:48:58,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220997666] [2021-11-04 14:48:58,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220997666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:48:58,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:48:58,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:48:58,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395305415] [2021-11-04 14:48:58,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:48:58,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:48:58,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:48:58,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:48:58,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:48:58,580 INFO L87 Difference]: Start difference. First operand 300 states and 385 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-04 14:48:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:48:59,341 INFO L93 Difference]: Finished difference Result 617 states and 797 transitions. [2021-11-04 14:48:59,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:48:59,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-04 14:48:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:48:59,342 INFO L225 Difference]: With dead ends: 617 [2021-11-04 14:48:59,342 INFO L226 Difference]: Without dead ends: 321 [2021-11-04 14:48:59,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:48:59,344 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 664.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.11ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 742.11ms IncrementalHoareTripleChecker+Time [2021-11-04 14:48:59,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 783 Unknown, 0 Unchecked, 2.11ms Time], IncrementalHoareTripleChecker [28 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 742.11ms Time] [2021-11-04 14:48:59,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-04 14:48:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2021-11-04 14:48:59,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 289 states have (on average 1.4013840830449826) internal successors, (405), 319 states have internal predecessors, (405), 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) [2021-11-04 14:48:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 405 transitions. [2021-11-04 14:48:59,359 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 405 transitions. Word has length 57 [2021-11-04 14:48:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:48:59,367 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 405 transitions. [2021-11-04 14:48:59,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-04 14:48:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 405 transitions. [2021-11-04 14:48:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-04 14:48:59,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:59,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:48:59,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 14:48:59,583 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 [2021-11-04 14:48:59,584 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-04 14:48:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1379176647, now seen corresponding path program 1 times [2021-11-04 14:48:59,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:59,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622545511] [2021-11-04 14:48:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:59,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:59,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:48:59,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478175262] [2021-11-04 14:48:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:59,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:59,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:48:59,597 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) [2021-11-04 14:48:59,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 14:48:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:48:59,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:48:59,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:48:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:48:59,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:48:59,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:48:59,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622545511] [2021-11-04 14:48:59,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:48:59,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478175262] [2021-11-04 14:48:59,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478175262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:48:59,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:48:59,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:48:59,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786910083] [2021-11-04 14:48:59,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:48:59,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:48:59,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:48:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:48:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:48:59,837 INFO L87 Difference]: Start difference. First operand 320 states and 405 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-04 14:49:00,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:49:00,314 INFO L93 Difference]: Finished difference Result 628 states and 798 transitions. [2021-11-04 14:49:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:49:00,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-11-04 14:49:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:49:00,316 INFO L225 Difference]: With dead ends: 628 [2021-11-04 14:49:00,316 INFO L226 Difference]: Without dead ends: 312 [2021-11-04 14:49:00,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:49:00,317 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 371 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 359.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.42ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 453.29ms IncrementalHoareTripleChecker+Time [2021-11-04 14:49:00,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 0 Invalid, 788 Unknown, 0 Unchecked, 2.42ms Time], IncrementalHoareTripleChecker [24 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 453.29ms Time] [2021-11-04 14:49:00,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-04 14:49:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 306. [2021-11-04 14:49:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 275 states have (on average 1.3963636363636365) internal successors, (384), 305 states have internal predecessors, (384), 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) [2021-11-04 14:49:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 384 transitions. [2021-11-04 14:49:00,329 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 384 transitions. Word has length 57 [2021-11-04 14:49:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:49:00,329 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 384 transitions. [2021-11-04 14:49:00,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-04 14:49:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 384 transitions. [2021-11-04 14:49:00,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-04 14:49:00,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:49:00,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:49:00,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 14:49:00,533 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 [2021-11-04 14:49:00,533 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-04 14:49:00,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:49:00,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1996694677, now seen corresponding path program 1 times [2021-11-04 14:49:00,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:49:00,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650178286] [2021-11-04 14:49:00,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:49:00,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:49:00,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:49:00,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614895565] [2021-11-04 14:49:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:49:00,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:49:00,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:49:00,551 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) [2021-11-04 14:49:00,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 14:49:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:49:00,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 14:49:00,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:49:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:49:00,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:49:00,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:49:00,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650178286] [2021-11-04 14:49:00,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:49:00,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614895565] [2021-11-04 14:49:00,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614895565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:49:00,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:49:00,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:49:00,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366902701] [2021-11-04 14:49:00,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:49:00,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:49:00,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:49:00,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:49:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:49:00,894 INFO L87 Difference]: Start difference. First operand 306 states and 384 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-04 14:49:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:49:01,553 INFO L93 Difference]: Finished difference Result 779 states and 977 transitions. [2021-11-04 14:49:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:49:01,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-04 14:49:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:49:01,556 INFO L225 Difference]: With dead ends: 779 [2021-11-04 14:49:01,556 INFO L226 Difference]: Without dead ends: 477 [2021-11-04 14:49:01,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:49:01,557 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 178 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 473.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 602.67ms IncrementalHoareTripleChecker+Time [2021-11-04 14:49:01,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 0 Invalid, 793 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [5 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 602.67ms Time] [2021-11-04 14:49:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-04 14:49:01,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 444. [2021-11-04 14:49:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 413 states have (on average 1.3995157384987893) internal successors, (578), 443 states have internal predecessors, (578), 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) [2021-11-04 14:49:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 578 transitions. [2021-11-04 14:49:01,577 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 578 transitions. Word has length 57 [2021-11-04 14:49:01,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:49:01,577 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 578 transitions. [2021-11-04 14:49:01,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-04 14:49:01,578 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 578 transitions. [2021-11-04 14:49:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-04 14:49:01,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:49:01,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:49:01,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 14:49:01,793 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 [2021-11-04 14:49:01,794 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-04 14:49:01,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:49:01,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1378561412, now seen corresponding path program 1 times [2021-11-04 14:49:01,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:49:01,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180483472] [2021-11-04 14:49:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:49:01,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:49:01,806 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:49:01,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916515666] [2021-11-04 14:49:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:49:01,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:49:01,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:49:01,808 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) [2021-11-04 14:49:01,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 14:49:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:49:01,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:49:01,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:49:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:49:02,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:49:02,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:49:02,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180483472] [2021-11-04 14:49:02,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:49:02,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916515666] [2021-11-04 14:49:02,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916515666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:49:02,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:49:02,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:49:02,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325602536] [2021-11-04 14:49:02,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:49:02,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:49:02,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:49:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:49:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:49:02,032 INFO L87 Difference]: Start difference. First operand 444 states and 578 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-04 14:49:02,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:49:02,557 INFO L93 Difference]: Finished difference Result 842 states and 1107 transitions. [2021-11-04 14:49:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:49:02,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-04 14:49:02,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:49:02,559 INFO L225 Difference]: With dead ends: 842 [2021-11-04 14:49:02,559 INFO L226 Difference]: Without dead ends: 446 [2021-11-04 14:49:02,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:49:02,560 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 415.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 505.76ms IncrementalHoareTripleChecker+Time [2021-11-04 14:49:02,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 752 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [2 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 505.76ms Time] [2021-11-04 14:49:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-04 14:49:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-11-04 14:49:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 415 states have (on average 1.3975903614457832) internal successors, (580), 445 states have internal predecessors, (580), 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) [2021-11-04 14:49:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 580 transitions. [2021-11-04 14:49:02,568 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 580 transitions. Word has length 64 [2021-11-04 14:49:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:49:02,568 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 580 transitions. [2021-11-04 14:49:02,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-04 14:49:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 580 transitions. [2021-11-04 14:49:02,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-04 14:49:02,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:49:02,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:49:02,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-04 14:49:02,782 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 [2021-11-04 14:49:02,783 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-04 14:49:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:49:02,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1147149435, now seen corresponding path program 1 times [2021-11-04 14:49:02,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:49:02,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543779315] [2021-11-04 14:49:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:49:02,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:49:02,807 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:49:02,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921962901] [2021-11-04 14:49:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:49:02,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:49:02,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:49:02,811 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) [2021-11-04 14:49:02,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 14:49:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:49:02,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 14:49:02,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:49:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 14:49:03,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:49:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 14:49:03,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:49:03,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543779315] [2021-11-04 14:49:03,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:49:03,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921962901] [2021-11-04 14:49:03,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921962901] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:49:03,138 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:49:03,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 14:49:03,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794077126] [2021-11-04 14:49:03,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:49:03,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 14:49:03,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:49:03,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 14:49:03,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:49:03,140 INFO L87 Difference]: Start difference. First operand 446 states and 580 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2021-11-04 14:49:03,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:49:03,715 INFO L93 Difference]: Finished difference Result 850 states and 1119 transitions. [2021-11-04 14:49:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 14:49:03,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 66 [2021-11-04 14:49:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:49:03,717 INFO L225 Difference]: With dead ends: 850 [2021-11-04 14:49:03,717 INFO L226 Difference]: Without dead ends: 452 [2021-11-04 14:49:03,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.49ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:49:03,718 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 466.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 554.41ms IncrementalHoareTripleChecker+Time [2021-11-04 14:49:03,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 772 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [16 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 554.41ms Time] [2021-11-04 14:49:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-04 14:49:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-11-04 14:49:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 421 states have (on average 1.3919239904988123) internal successors, (586), 451 states have internal predecessors, (586), 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) [2021-11-04 14:49:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 586 transitions. [2021-11-04 14:49:03,726 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 586 transitions. Word has length 66 [2021-11-04 14:49:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:49:03,727 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 586 transitions. [2021-11-04 14:49:03,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2021-11-04 14:49:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 586 transitions. [2021-11-04 14:49:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-04 14:49:03,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:49:03,728 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:49:03,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 14:49:03,945 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 [2021-11-04 14:49:03,946 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-04 14:49:03,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:49:03,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1732821828, now seen corresponding path program 2 times [2021-11-04 14:49:03,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:49:03,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214084406] [2021-11-04 14:49:03,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:49:03,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:49:03,962 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:49:03,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065437964] [2021-11-04 14:49:03,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:49:03,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:49:03,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:49:03,966 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) [2021-11-04 14:49:03,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 14:52:28,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:52:28,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:52:28,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 14:52:28,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:52:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 14:52:28,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:52:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 14:52:28,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:52:28,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214084406] [2021-11-04 14:52:28,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:52:28,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065437964] [2021-11-04 14:52:28,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065437964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:52:28,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:52:28,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 14:52:28,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577155529] [2021-11-04 14:52:28,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:52:28,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 14:52:28,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:52:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 14:52:28,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:52:28,974 INFO L87 Difference]: Start difference. First operand 452 states and 586 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2021-11-04 14:52:30,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:52:30,239 INFO L93 Difference]: Finished difference Result 863 states and 1133 transitions. [2021-11-04 14:52:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 14:52:30,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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 72 [2021-11-04 14:52:30,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:52:30,241 INFO L225 Difference]: With dead ends: 863 [2021-11-04 14:52:30,241 INFO L226 Difference]: Without dead ends: 459 [2021-11-04 14:52:30,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.29ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:52:30,242 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1042.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.20ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1217.44ms IncrementalHoareTripleChecker+Time [2021-11-04 14:52:30,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1899 Unknown, 0 Unchecked, 4.20ms Time], IncrementalHoareTripleChecker [15 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 1217.44ms Time] [2021-11-04 14:52:30,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-04 14:52:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2021-11-04 14:52:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 428 states have (on average 1.3855140186915889) internal successors, (593), 458 states have internal predecessors, (593), 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) [2021-11-04 14:52:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 593 transitions. [2021-11-04 14:52:30,249 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 593 transitions. Word has length 72 [2021-11-04 14:52:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:52:30,249 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 593 transitions. [2021-11-04 14:52:30,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2021-11-04 14:52:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 593 transitions. [2021-11-04 14:52:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-04 14:52:30,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:52:30,250 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:52:30,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-04 14:52:30,471 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 [2021-11-04 14:52:30,472 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-04 14:52:30,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:52:30,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1543831695, now seen corresponding path program 3 times [2021-11-04 14:52:30,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:52:30,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523219267] [2021-11-04 14:52:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:52:30,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:52:30,482 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:52:30,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591176246] [2021-11-04 14:52:30,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:52:30,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:52:30,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:52:30,486 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) [2021-11-04 14:52:30,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15