./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.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_FNV_test9-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 15:17:29,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 15:17:29,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 15:17:29,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 15:17:29,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 15:17:29,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 15:17:29,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 15:17:29,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 15:17:29,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 15:17:29,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 15:17:29,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 15:17:29,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 15:17:29,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 15:17:29,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 15:17:29,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 15:17:29,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 15:17:29,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 15:17:29,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 15:17:29,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 15:17:29,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 15:17:29,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 15:17:29,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 15:17:29,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 15:17:29,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 15:17:29,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 15:17:29,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 15:17:29,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 15:17:29,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 15:17:29,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 15:17:29,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 15:17:29,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 15:17:29,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 15:17:29,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 15:17:29,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 15:17:29,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 15:17:29,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 15:17:29,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 15:17:29,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 15:17:29,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 15:17:29,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 15:17:29,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 15:17:29,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 15:17:29,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 15:17:29,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 15:17:29,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 15:17:29,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 15:17:29,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 15:17:29,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 15:17:29,697 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 15:17:29,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 15:17:29,697 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 15:17:29,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 15:17:29,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 15:17:29,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 15:17:29,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 15:17:29,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 15:17:29,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 15:17:29,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 15:17:29,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 15:17:29,698 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 15:17:29,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 15:17:29,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 15:17:29,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 15:17:29,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 15:17:29,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 15:17:29,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 15:17:29,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 15:17:29,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 15:17:29,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 15:17:29,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 15:17:29,700 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 15:17:29,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 15:17:29,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 15:17:29,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 15:17:29,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2021-11-04 15:17:29,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 15:17:29,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 15:17:29,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 15:17:29,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 15:17:29,868 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 15:17:29,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2021-11-04 15:17:29,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e95cde7/c8ad73c25a9a4f678a52a3936e9a25d7/FLAGfeadb8e06 [2021-11-04 15:17:30,445 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 15:17:30,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2021-11-04 15:17:30,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e95cde7/c8ad73c25a9a4f678a52a3936e9a25d7/FLAGfeadb8e06 [2021-11-04 15:17:30,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e95cde7/c8ad73c25a9a4f678a52a3936e9a25d7 [2021-11-04 15:17:30,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 15:17:30,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 15:17:30,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 15:17:30,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 15:17:30,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 15:17:30,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:17:30" (1/1) ... [2021-11-04 15:17:30,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cabace7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:30, skipping insertion in model container [2021-11-04 15:17:30,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:17:30" (1/1) ... [2021-11-04 15:17:30,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 15:17:30,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 15:17:31,245 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_FNV_test9-2.i[33021,33034] [2021-11-04 15:17:31,394 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_FNV_test9-2.i[84583,84596] [2021-11-04 15:17:31,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 15:17:31,408 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 15:17:31,425 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_FNV_test9-2.i[33021,33034] [2021-11-04 15:17:31,558 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_FNV_test9-2.i[84583,84596] [2021-11-04 15:17:31,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 15:17:31,605 INFO L208 MainTranslator]: Completed translation [2021-11-04 15:17:31,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31 WrapperNode [2021-11-04 15:17:31,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 15:17:31,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 15:17:31,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 15:17:31,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 15:17:31,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (1/1) ... [2021-11-04 15:17:31,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (1/1) ... [2021-11-04 15:17:31,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 15:17:31,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 15:17:31,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 15:17:31,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 15:17:31,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (1/1) ... [2021-11-04 15:17:31,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (1/1) ... [2021-11-04 15:17:31,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (1/1) ... [2021-11-04 15:17:31,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (1/1) ... [2021-11-04 15:17:31,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (1/1) ... [2021-11-04 15:17:31,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (1/1) ... [2021-11-04 15:17:31,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (1/1) ... [2021-11-04 15:17:31,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 15:17:31,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 15:17:31,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 15:17:31,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 15:17:31,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (1/1) ... [2021-11-04 15:17:31,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 15:17:31,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:17:31,953 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 15:17:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 15:17:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 15:17:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 15:17:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 15:17:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 15:17:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 15:17:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 15:17:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 15:17:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 15:17:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 15:17:32,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 15:17:31,992 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 15:17:32,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 15:17:32,960 INFO L299 CfgBuilder]: Removed 1075 assume(true) statements. [2021-11-04 15:17:32,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:17:32 BoogieIcfgContainer [2021-11-04 15:17:32,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 15:17:32,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 15:17:32,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 15:17:32,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 15:17:32,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:17:30" (1/3) ... [2021-11-04 15:17:32,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660b8c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:17:32, skipping insertion in model container [2021-11-04 15:17:32,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:17:31" (2/3) ... [2021-11-04 15:17:32,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660b8c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:17:32, skipping insertion in model container [2021-11-04 15:17:32,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:17:32" (3/3) ... [2021-11-04 15:17:32,971 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test9-2.i [2021-11-04 15:17:32,976 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 15:17:32,977 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 501 error locations. [2021-11-04 15:17:33,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 15:17:33,019 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 15:17:33,019 INFO L340 AbstractCegarLoop]: Starting to check reachability of 501 error locations. [2021-11-04 15:17:33,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 2186 states, 1684 states have (on average 1.9667458432304037) internal successors, (3312), 2185 states have internal predecessors, (3312), 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 15:17:33,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-04 15:17:33,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:17:33,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:17:33,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:17:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:17:33,086 INFO L85 PathProgramCache]: Analyzing trace with hash 239437319, now seen corresponding path program 1 times [2021-11-04 15:17:33,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:17:33,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397254207] [2021-11-04 15:17:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:33,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:17:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:17:33,207 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 15:17:33,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:17:33,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397254207] [2021-11-04 15:17:33,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397254207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:17:33,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:17:33,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 15:17:33,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437232106] [2021-11-04 15:17:33,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:17:33,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 15:17:33,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:17:33,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 15:17:33,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 15:17:33,234 INFO L87 Difference]: Start difference. First operand has 2186 states, 1684 states have (on average 1.9667458432304037) internal successors, (3312), 2185 states have internal predecessors, (3312), 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 15:17:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:17:35,259 INFO L93 Difference]: Finished difference Result 4370 states and 6622 transitions. [2021-11-04 15:17:35,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 15:17:35,264 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 15:17:35,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:17:35,288 INFO L225 Difference]: With dead ends: 4370 [2021-11-04 15:17:35,289 INFO L226 Difference]: Without dead ends: 2153 [2021-11-04 15:17:35,295 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 15:17:35,297 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1467.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1913.60ms IncrementalHoareTripleChecker+Time [2021-11-04 15:17:35,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2744 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [0 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 1913.60ms Time] [2021-11-04 15:17:35,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-04 15:17:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2021-11-04 15:17:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 1652 states have (on average 1.6343825665859564) internal successors, (2700), 2152 states have internal predecessors, (2700), 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 15:17:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2700 transitions. [2021-11-04 15:17:35,381 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2700 transitions. Word has length 9 [2021-11-04 15:17:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:17:35,381 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 2700 transitions. [2021-11-04 15:17:35,381 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 15:17:35,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2700 transitions. [2021-11-04 15:17:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 15:17:35,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:17:35,383 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 15:17:35,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 15:17:35,383 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:17:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:17:35,384 INFO L85 PathProgramCache]: Analyzing trace with hash 627540097, now seen corresponding path program 1 times [2021-11-04 15:17:35,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:17:35,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017894800] [2021-11-04 15:17:35,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:35,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:17:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:17:35,433 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 15:17:35,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:17:35,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017894800] [2021-11-04 15:17:35,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017894800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:17:35,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:17:35,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 15:17:35,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099159173] [2021-11-04 15:17:35,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:17:35,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 15:17:35,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:17:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 15:17:35,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 15:17:35,436 INFO L87 Difference]: Start difference. First operand 2153 states and 2700 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 15:17:40,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:17:40,084 INFO L93 Difference]: Finished difference Result 6317 states and 7915 transitions. [2021-11-04 15:17:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 15:17:40,084 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 15:17:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:17:40,096 INFO L225 Difference]: With dead ends: 6317 [2021-11-04 15:17:40,096 INFO L226 Difference]: Without dead ends: 4254 [2021-11-04 15:17:40,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 15:17:40,100 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2628 mSDsluCounter, 5295 mSDsCounter, 0 mSdLazyCounter, 8098 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3617.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2628 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.74ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4474.44ms IncrementalHoareTripleChecker+Time [2021-11-04 15:17:40,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2628 Valid, 0 Invalid, 8101 Unknown, 0 Unchecked, 23.74ms Time], IncrementalHoareTripleChecker [3 Valid, 8098 Invalid, 0 Unknown, 0 Unchecked, 4474.44ms Time] [2021-11-04 15:17:40,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2021-11-04 15:17:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 2155. [2021-11-04 15:17:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1654 states have (on average 1.6336154776299878) internal successors, (2702), 2154 states have internal predecessors, (2702), 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 15:17:40,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2702 transitions. [2021-11-04 15:17:40,143 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2702 transitions. Word has length 44 [2021-11-04 15:17:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:17:40,144 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2702 transitions. [2021-11-04 15:17:40,144 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 15:17:40,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2702 transitions. [2021-11-04 15:17:40,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 15:17:40,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:17:40,146 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:17:40,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 15:17:40,147 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:17:40,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:17:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1103299153, now seen corresponding path program 1 times [2021-11-04 15:17:40,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:17:40,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023832762] [2021-11-04 15:17:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:40,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:17:40,162 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:17:40,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468501834] [2021-11-04 15:17:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:40,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:17:40,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:17:40,164 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 15:17:40,187 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 15:17:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:17:40,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 15:17:40,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:17:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 15:17:40,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:17:40,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:17:40,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023832762] [2021-11-04 15:17:40,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:17:40,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468501834] [2021-11-04 15:17:40,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468501834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:17:40,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:17:40,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 15:17:40,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55616398] [2021-11-04 15:17:40,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:17:40,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 15:17:40,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:17:40,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 15:17:40,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:17:40,500 INFO L87 Difference]: Start difference. First operand 2155 states and 2702 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:42,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:17:42,853 INFO L93 Difference]: Finished difference Result 4327 states and 5431 transitions. [2021-11-04 15:17:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 15:17:42,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 15:17:42,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:17:42,859 INFO L225 Difference]: With dead ends: 4327 [2021-11-04 15:17:42,859 INFO L226 Difference]: Without dead ends: 2176 [2021-11-04 15:17:42,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:17:42,861 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 5389 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1808.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.80ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2290.43ms IncrementalHoareTripleChecker+Time [2021-11-04 15:17:42,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 5417 Unknown, 0 Unchecked, 11.80ms Time], IncrementalHoareTripleChecker [28 Valid, 5389 Invalid, 0 Unknown, 0 Unchecked, 2290.43ms Time] [2021-11-04 15:17:42,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-11-04 15:17:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2175. [2021-11-04 15:17:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 1674 states have (on average 1.6260454002389486) internal successors, (2722), 2174 states have internal predecessors, (2722), 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 15:17:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 2722 transitions. [2021-11-04 15:17:42,892 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 2722 transitions. Word has length 96 [2021-11-04 15:17:42,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:17:42,893 INFO L470 AbstractCegarLoop]: Abstraction has 2175 states and 2722 transitions. [2021-11-04 15:17:42,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 2722 transitions. [2021-11-04 15:17:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 15:17:42,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:17:42,895 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:17:42,921 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 15:17:43,112 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 15:17:43,112 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:17:43,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:17:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1343538899, now seen corresponding path program 1 times [2021-11-04 15:17:43,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:17:43,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079703142] [2021-11-04 15:17:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:43,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:17:43,130 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:17:43,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206465101] [2021-11-04 15:17:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:43,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:17:43,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:17:43,159 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 15:17:43,161 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 15:17:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:17:43,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 15:17:43,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:17:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 15:17:43,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:17:43,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:17:43,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079703142] [2021-11-04 15:17:43,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:17:43,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206465101] [2021-11-04 15:17:43,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206465101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:17:43,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:17:43,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 15:17:43,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383969840] [2021-11-04 15:17:43,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:17:43,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 15:17:43,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:17:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 15:17:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:17:43,438 INFO L87 Difference]: Start difference. First operand 2175 states and 2722 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:17:45,609 INFO L93 Difference]: Finished difference Result 4258 states and 5334 transitions. [2021-11-04 15:17:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 15:17:45,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 15:17:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:17:45,623 INFO L225 Difference]: With dead ends: 4258 [2021-11-04 15:17:45,623 INFO L226 Difference]: Without dead ends: 2196 [2021-11-04 15:17:45,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:17:45,626 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 5389 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1676.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.43ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2113.11ms IncrementalHoareTripleChecker+Time [2021-11-04 15:17:45,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 5417 Unknown, 0 Unchecked, 8.43ms Time], IncrementalHoareTripleChecker [28 Valid, 5389 Invalid, 0 Unknown, 0 Unchecked, 2113.11ms Time] [2021-11-04 15:17:45,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-11-04 15:17:45,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2195. [2021-11-04 15:17:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 1694 states have (on average 1.6186540731995278) internal successors, (2742), 2194 states have internal predecessors, (2742), 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 15:17:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 2742 transitions. [2021-11-04 15:17:45,651 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 2742 transitions. Word has length 96 [2021-11-04 15:17:45,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:17:45,652 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 2742 transitions. [2021-11-04 15:17:45,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 2742 transitions. [2021-11-04 15:17:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 15:17:45,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:17:45,653 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:17:45,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-04 15:17:45,869 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 15:17:45,870 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:17:45,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:17:45,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1663743951, now seen corresponding path program 1 times [2021-11-04 15:17:45,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:17:45,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523699113] [2021-11-04 15:17:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:45,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:17:45,895 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:17:45,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26067662] [2021-11-04 15:17:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:45,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:17:45,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:17:45,903 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 15:17:45,906 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 15:17:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:17:46,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 15:17:46,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:17:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 15:17:46,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:17:46,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:17:46,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523699113] [2021-11-04 15:17:46,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:17:46,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26067662] [2021-11-04 15:17:46,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26067662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:17:46,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:17:46,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 15:17:46,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917067693] [2021-11-04 15:17:46,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:17:46,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 15:17:46,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:17:46,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 15:17:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 15:17:46,177 INFO L87 Difference]: Start difference. First operand 2195 states and 2742 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:47,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 15:17:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:17:49,568 INFO L93 Difference]: Finished difference Result 4378 states and 5472 transitions. [2021-11-04 15:17:49,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 15:17:49,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 15:17:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:17:49,575 INFO L225 Difference]: With dead ends: 4378 [2021-11-04 15:17:49,575 INFO L226 Difference]: Without dead ends: 2187 [2021-11-04 15:17:49,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 15:17:49,578 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2688 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 5398 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2844.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.30ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3317.18ms IncrementalHoareTripleChecker+Time [2021-11-04 15:17:49,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2688 Valid, 0 Invalid, 5422 Unknown, 0 Unchecked, 9.30ms Time], IncrementalHoareTripleChecker [24 Valid, 5398 Invalid, 0 Unknown, 0 Unchecked, 3317.18ms Time] [2021-11-04 15:17:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-11-04 15:17:49,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2181. [2021-11-04 15:17:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 1680 states have (on average 1.6196428571428572) internal successors, (2721), 2180 states have internal predecessors, (2721), 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 15:17:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2721 transitions. [2021-11-04 15:17:49,602 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2721 transitions. Word has length 96 [2021-11-04 15:17:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:17:49,602 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 2721 transitions. [2021-11-04 15:17:49,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2721 transitions. [2021-11-04 15:17:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 15:17:49,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:17:49,603 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:17:49,625 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 15:17:49,816 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 15:17:49,817 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:17:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:17:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash 570124223, now seen corresponding path program 1 times [2021-11-04 15:17:49,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:17:49,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565977593] [2021-11-04 15:17:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:49,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:17:49,834 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:17:49,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547487755] [2021-11-04 15:17:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:49,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:17:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:17:49,851 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 15:17:49,853 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 15:17:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:17:49,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 15:17:49,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:17:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 15:17:50,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:17:50,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:17:50,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565977593] [2021-11-04 15:17:50,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:17:50,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547487755] [2021-11-04 15:17:50,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547487755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:17:50,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:17:50,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 15:17:50,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001382977] [2021-11-04 15:17:50,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:17:50,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 15:17:50,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:17:50,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 15:17:50,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 15:17:50,103 INFO L87 Difference]: Start difference. First operand 2181 states and 2721 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:53,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:17:53,130 INFO L93 Difference]: Finished difference Result 4255 states and 5314 transitions. [2021-11-04 15:17:53,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 15:17:53,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 15:17:53,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:17:53,136 INFO L225 Difference]: With dead ends: 4255 [2021-11-04 15:17:53,136 INFO L226 Difference]: Without dead ends: 2173 [2021-11-04 15:17:53,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 15:17:53,138 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2571 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 5488 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2465.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.40ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2964.65ms IncrementalHoareTripleChecker+Time [2021-11-04 15:17:53,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2571 Valid, 0 Invalid, 5512 Unknown, 0 Unchecked, 7.40ms Time], IncrementalHoareTripleChecker [24 Valid, 5488 Invalid, 0 Unknown, 0 Unchecked, 2964.65ms Time] [2021-11-04 15:17:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2173 states. [2021-11-04 15:17:53,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2173 to 2167. [2021-11-04 15:17:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 1666 states have (on average 1.6206482593037215) internal successors, (2700), 2166 states have internal predecessors, (2700), 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 15:17:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 2700 transitions. [2021-11-04 15:17:53,165 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 2700 transitions. Word has length 96 [2021-11-04 15:17:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:17:53,167 INFO L470 AbstractCegarLoop]: Abstraction has 2167 states and 2700 transitions. [2021-11-04 15:17:53,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 2700 transitions. [2021-11-04 15:17:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 15:17:53,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:17:53,168 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:17:53,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 15:17:53,375 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 15:17:53,375 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:17:53,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:17:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash -312724623, now seen corresponding path program 1 times [2021-11-04 15:17:53,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:17:53,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238564132] [2021-11-04 15:17:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:53,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:17:53,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:17:53,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662705428] [2021-11-04 15:17:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:53,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:17:53,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:17:53,393 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 15:17:53,394 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 15:17:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:17:53,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 15:17:53,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:17:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 15:17:53,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:17:53,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:17:53,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238564132] [2021-11-04 15:17:53,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:17:53,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662705428] [2021-11-04 15:17:53,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662705428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:17:53,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:17:53,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 15:17:53,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135502330] [2021-11-04 15:17:53,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:17:53,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 15:17:53,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:17:53,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 15:17:53,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:17:53,729 INFO L87 Difference]: Start difference. First operand 2167 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:17:57,175 INFO L93 Difference]: Finished difference Result 6426 states and 8004 transitions. [2021-11-04 15:17:57,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 15:17:57,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 15:17:57,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:17:57,186 INFO L225 Difference]: With dead ends: 6426 [2021-11-04 15:17:57,186 INFO L226 Difference]: Without dead ends: 4263 [2021-11-04 15:17:57,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:17:57,190 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2569 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 5402 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2642.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.40ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3351.62ms IncrementalHoareTripleChecker+Time [2021-11-04 15:17:57,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2569 Valid, 0 Invalid, 5405 Unknown, 0 Unchecked, 8.40ms Time], IncrementalHoareTripleChecker [3 Valid, 5402 Invalid, 0 Unknown, 0 Unchecked, 3351.62ms Time] [2021-11-04 15:17:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2021-11-04 15:17:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 3261. [2021-11-04 15:17:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3261 states, 2760 states have (on average 1.7409420289855073) internal successors, (4805), 3260 states have internal predecessors, (4805), 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 15:17:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 4805 transitions. [2021-11-04 15:17:57,233 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 4805 transitions. Word has length 96 [2021-11-04 15:17:57,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:17:57,234 INFO L470 AbstractCegarLoop]: Abstraction has 3261 states and 4805 transitions. [2021-11-04 15:17:57,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 4805 transitions. [2021-11-04 15:17:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-04 15:17:57,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:17:57,235 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:17:57,257 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 15:17:57,439 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 15:17:57,440 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:17:57,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:17:57,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1091132224, now seen corresponding path program 1 times [2021-11-04 15:17:57,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:17:57,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879444770] [2021-11-04 15:17:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:57,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:17:57,456 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:17:57,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34097605] [2021-11-04 15:17:57,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:57,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:17:57,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:17:57,459 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 15:17:57,461 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 15:17:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:17:57,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 15:17:57,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:17:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 15:17:57,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:17:57,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:17:57,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879444770] [2021-11-04 15:17:57,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:17:57,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34097605] [2021-11-04 15:17:57,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34097605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:17:57,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:17:57,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 15:17:57,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412544227] [2021-11-04 15:17:57,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:17:57,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 15:17:57,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:17:57,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 15:17:57,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:17:57,755 INFO L87 Difference]: Start difference. First operand 3261 states and 4805 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:17:59,421 INFO L93 Difference]: Finished difference Result 6476 states and 9561 transitions. [2021-11-04 15:17:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 15:17:59,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-04 15:17:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:17:59,431 INFO L225 Difference]: With dead ends: 6476 [2021-11-04 15:17:59,431 INFO L226 Difference]: Without dead ends: 3263 [2021-11-04 15:17:59,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 15:17:59,435 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 5370 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1326.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.83ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1609.27ms IncrementalHoareTripleChecker+Time [2021-11-04 15:17:59,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5372 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [2 Valid, 5370 Invalid, 0 Unknown, 0 Unchecked, 1609.27ms Time] [2021-11-04 15:17:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2021-11-04 15:17:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3263. [2021-11-04 15:17:59,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 2762 states have (on average 1.7404055032585084) internal successors, (4807), 3262 states have internal predecessors, (4807), 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 15:17:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4807 transitions. [2021-11-04 15:17:59,510 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4807 transitions. Word has length 103 [2021-11-04 15:17:59,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:17:59,510 INFO L470 AbstractCegarLoop]: Abstraction has 3263 states and 4807 transitions. [2021-11-04 15:17:59,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:17:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4807 transitions. [2021-11-04 15:17:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-04 15:17:59,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:17:59,511 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:17:59,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 15:17:59,727 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 15:17:59,727 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:17:59,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:17:59,728 INFO L85 PathProgramCache]: Analyzing trace with hash 77652065, now seen corresponding path program 1 times [2021-11-04 15:17:59,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:17:59,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296052704] [2021-11-04 15:17:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:59,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:17:59,757 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:17:59,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114067838] [2021-11-04 15:17:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:17:59,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:17:59,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:17:59,759 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 15:17:59,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 15:17:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:17:59,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 15:17:59,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:18:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 15:18:00,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 15:18:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 15:18:00,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:18:00,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296052704] [2021-11-04 15:18:00,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:18:00,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114067838] [2021-11-04 15:18:00,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114067838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 15:18:00,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 15:18:00,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 15:18:00,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868013968] [2021-11-04 15:18:00,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 15:18:00,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 15:18:00,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:18:00,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 15:18:00,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 15:18:00,218 INFO L87 Difference]: Start difference. First operand 3263 states and 4807 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 15:18:02,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:18:02,569 INFO L93 Difference]: Finished difference Result 6484 states and 9573 transitions. [2021-11-04 15:18:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 15:18:02,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 105 [2021-11-04 15:18:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:18:02,578 INFO L225 Difference]: With dead ends: 6484 [2021-11-04 15:18:02,579 INFO L226 Difference]: Without dead ends: 3269 [2021-11-04 15:18:02,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.35ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 15:18:02,582 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 5354 mSDsCounter, 0 mSdLazyCounter, 8058 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1874.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.56ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 8058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2270.07ms IncrementalHoareTripleChecker+Time [2021-11-04 15:18:02,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 8071 Unknown, 0 Unchecked, 7.56ms Time], IncrementalHoareTripleChecker [13 Valid, 8058 Invalid, 0 Unknown, 0 Unchecked, 2270.07ms Time] [2021-11-04 15:18:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2021-11-04 15:18:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3269. [2021-11-04 15:18:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2768 states have (on average 1.738800578034682) internal successors, (4813), 3268 states have internal predecessors, (4813), 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 15:18:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4813 transitions. [2021-11-04 15:18:02,625 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4813 transitions. Word has length 105 [2021-11-04 15:18:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:18:02,625 INFO L470 AbstractCegarLoop]: Abstraction has 3269 states and 4813 transitions. [2021-11-04 15:18:02,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 15:18:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4813 transitions. [2021-11-04 15:18:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-04 15:18:02,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:18:02,626 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:18:02,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-04 15:18:02,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:18:02,856 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:18:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:18:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash -383784704, now seen corresponding path program 2 times [2021-11-04 15:18:02,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:18:02,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916057137] [2021-11-04 15:18:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:18:02,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:18:02,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:18:02,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271324119] [2021-11-04 15:18:02,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 15:18:02,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:18:02,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:18:02,868 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:18:02,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 15:18:02,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 15:18:02,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 15:18:03,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 15:18:03,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:18:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 15:18:03,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 15:18:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 15:18:03,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:18:03,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916057137] [2021-11-04 15:18:03,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:18:03,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271324119] [2021-11-04 15:18:03,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271324119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 15:18:03,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 15:18:03,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 15:18:03,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606239927] [2021-11-04 15:18:03,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 15:18:03,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 15:18:03,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:18:03,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 15:18:03,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 15:18:03,401 INFO L87 Difference]: Start difference. First operand 3269 states and 4813 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 15:18:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:18:07,602 INFO L93 Difference]: Finished difference Result 6502 states and 9597 transitions. [2021-11-04 15:18:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 15:18:07,602 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 111 [2021-11-04 15:18:07,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:18:07,610 INFO L225 Difference]: With dead ends: 6502 [2021-11-04 15:18:07,610 INFO L226 Difference]: Without dead ends: 3281 [2021-11-04 15:18:07,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.69ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 15:18:07,614 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8031 mSDsCounter, 0 mSdLazyCounter, 10752 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3324.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.81ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 10752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4093.33ms IncrementalHoareTripleChecker+Time [2021-11-04 15:18:07,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 10785 Unknown, 0 Unchecked, 13.81ms Time], IncrementalHoareTripleChecker [33 Valid, 10752 Invalid, 0 Unknown, 0 Unchecked, 4093.33ms Time] [2021-11-04 15:18:07,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2021-11-04 15:18:07,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3281. [2021-11-04 15:18:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 2780 states have (on average 1.735611510791367) internal successors, (4825), 3280 states have internal predecessors, (4825), 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 15:18:07,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4825 transitions. [2021-11-04 15:18:07,650 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4825 transitions. Word has length 111 [2021-11-04 15:18:07,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:18:07,651 INFO L470 AbstractCegarLoop]: Abstraction has 3281 states and 4825 transitions. [2021-11-04 15:18:07,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 15:18:07,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4825 transitions. [2021-11-04 15:18:07,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-04 15:18:07,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:18:07,652 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:18:07,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-04 15:18:07,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 15:18:07,870 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:18:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:18:07,871 INFO L85 PathProgramCache]: Analyzing trace with hash 562885024, now seen corresponding path program 3 times [2021-11-04 15:18:07,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:18:07,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513193192] [2021-11-04 15:18:07,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:18:07,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:18:07,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:18:07,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613704277] [2021-11-04 15:18:07,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 15:18:07,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:18:07,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:18:07,889 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:18:07,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 15:18:08,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 15:18:08,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 15:18:08,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 15:18:08,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:18:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 15:18:08,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 15:18:08,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:18:08,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513193192] [2021-11-04 15:18:08,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:18:08,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613704277] [2021-11-04 15:18:08,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613704277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 15:18:08,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 15:18:08,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 15:18:08,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071908636] [2021-11-04 15:18:08,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 15:18:08,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 15:18:08,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:18:08,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 15:18:08,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 15:18:08,295 INFO L87 Difference]: Start difference. First operand 3281 states and 4825 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:18:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:18:10,114 INFO L93 Difference]: Finished difference Result 5464 states and 7541 transitions. [2021-11-04 15:18:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 15:18:10,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-04 15:18:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:18:10,119 INFO L225 Difference]: With dead ends: 5464 [2021-11-04 15:18:10,120 INFO L226 Difference]: Without dead ends: 2231 [2021-11-04 15:18:10,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 15:18:10,123 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5258 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1382.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1750.16ms IncrementalHoareTripleChecker+Time [2021-11-04 15:18:10,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5258 Valid, 0 Invalid, 2790 Unknown, 0 Unchecked, 9.96ms Time], IncrementalHoareTripleChecker [1 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 1750.16ms Time] [2021-11-04 15:18:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2021-11-04 15:18:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2231. [2021-11-04 15:18:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 1730 states have (on average 1.5994219653179191) internal successors, (2767), 2230 states have internal predecessors, (2767), 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 15:18:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2767 transitions. [2021-11-04 15:18:10,154 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2767 transitions. Word has length 123 [2021-11-04 15:18:10,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:18:10,155 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 2767 transitions. [2021-11-04 15:18:10,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 15:18:10,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2767 transitions. [2021-11-04 15:18:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-04 15:18:10,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:18:10,156 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:18:10,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-04 15:18:10,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:18:10,373 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:18:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:18:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash 455290938, now seen corresponding path program 1 times [2021-11-04 15:18:10,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:18:10,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233046698] [2021-11-04 15:18:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:18:10,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:18:10,383 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:18:10,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596956602] [2021-11-04 15:18:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:18:10,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:18:10,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:18:10,385 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:18:10,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 15:18:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 15:18:10,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 15:18:10,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:18:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 15:18:10,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 15:18:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 15:18:11,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:18:11,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233046698] [2021-11-04 15:18:11,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:18:11,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596956602] [2021-11-04 15:18:11,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596956602] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 15:18:11,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 15:18:11,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 15:18:11,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025239061] [2021-11-04 15:18:11,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 15:18:11,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 15:18:11,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:18:11,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 15:18:11,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 15:18:11,165 INFO L87 Difference]: Start difference. First operand 2231 states and 2767 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 15:18:17,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:18:17,996 INFO L93 Difference]: Finished difference Result 4425 states and 5515 transitions. [2021-11-04 15:18:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 15:18:17,997 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 130 [2021-11-04 15:18:17,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:18:18,001 INFO L225 Difference]: With dead ends: 4425 [2021-11-04 15:18:18,001 INFO L226 Difference]: Without dead ends: 2255 [2021-11-04 15:18:18,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 255.73ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 15:18:18,004 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 10704 mSDsCounter, 0 mSdLazyCounter, 13453 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5172.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.23ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 13453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6680.62ms IncrementalHoareTripleChecker+Time [2021-11-04 15:18:18,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13538 Unknown, 0 Unchecked, 16.23ms Time], IncrementalHoareTripleChecker [85 Valid, 13453 Invalid, 0 Unknown, 0 Unchecked, 6680.62ms Time] [2021-11-04 15:18:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-11-04 15:18:18,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2255. [2021-11-04 15:18:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1754 states have (on average 1.5912200684150513) internal successors, (2791), 2254 states have internal predecessors, (2791), 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 15:18:18,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2791 transitions. [2021-11-04 15:18:18,039 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2791 transitions. Word has length 130 [2021-11-04 15:18:18,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:18:18,040 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 2791 transitions. [2021-11-04 15:18:18,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 15:18:18,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2791 transitions. [2021-11-04 15:18:18,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-04 15:18:18,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:18:18,046 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:18:18,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-04 15:18:18,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-04 15:18:18,266 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:18:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:18:18,267 INFO L85 PathProgramCache]: Analyzing trace with hash -535515398, now seen corresponding path program 2 times [2021-11-04 15:18:18,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:18:18,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385517766] [2021-11-04 15:18:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:18:18,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:18:18,278 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:18:18,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177111004] [2021-11-04 15:18:18,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 15:18:18,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:18:18,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:18:18,289 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:18:18,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 15:18:18,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 15:18:18,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 15:18:18,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 15:18:18,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 15:18:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 15:18:18,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 15:18:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 15:18:20,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 15:18:20,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385517766] [2021-11-04 15:18:20,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 15:18:20,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177111004] [2021-11-04 15:18:20,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177111004] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 15:18:20,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 15:18:20,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 15:18:20,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451533964] [2021-11-04 15:18:20,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 15:18:20,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 15:18:20,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 15:18:20,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 15:18:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 15:18:20,357 INFO L87 Difference]: Start difference. First operand 2255 states and 2791 transitions. Second operand has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 15:18:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 15:18:31,179 INFO L93 Difference]: Finished difference Result 4481 states and 5591 transitions. [2021-11-04 15:18:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 15:18:31,180 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 154 [2021-11-04 15:18:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 15:18:31,183 INFO L225 Difference]: With dead ends: 4481 [2021-11-04 15:18:31,183 INFO L226 Difference]: Without dead ends: 2299 [2021-11-04 15:18:31,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1402.32ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 15:18:31,186 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 13380 mSDsCounter, 0 mSdLazyCounter, 16180 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8200.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.16ms SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 16180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10544.42ms IncrementalHoareTripleChecker+Time [2021-11-04 15:18:31,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 16360 Unknown, 0 Unchecked, 24.16ms Time], IncrementalHoareTripleChecker [180 Valid, 16180 Invalid, 0 Unknown, 0 Unchecked, 10544.42ms Time] [2021-11-04 15:18:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2021-11-04 15:18:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2021-11-04 15:18:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1798 states have (on average 1.5767519466073414) internal successors, (2835), 2298 states have internal predecessors, (2835), 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 15:18:31,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2835 transitions. [2021-11-04 15:18:31,207 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2835 transitions. Word has length 154 [2021-11-04 15:18:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 15:18:31,207 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 2835 transitions. [2021-11-04 15:18:31,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 15:18:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2835 transitions. [2021-11-04 15:18:31,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-04 15:18:31,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 15:18:31,209 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 15:18:31,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-04 15:18:31,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-04 15:18:31,423 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 15:18:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 15:18:31,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1925272410, now seen corresponding path program 3 times [2021-11-04 15:18:31,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 15:18:31,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378669692] [2021-11-04 15:18:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 15:18:31,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 15:18:31,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 15:18:31,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690996031] [2021-11-04 15:18:31,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 15:18:31,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 15:18:31,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 15:18:31,442 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 15:18:31,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15