./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.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 c78ec383567aee735f8895b5666134248c3b9de1b96295d83b3c1c6979534c2b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 21:23:28,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 21:23:28,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 21:23:29,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 21:23:29,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 21:23:29,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 21:23:29,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 21:23:29,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 21:23:29,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 21:23:29,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 21:23:29,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 21:23:29,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 21:23:29,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 21:23:29,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 21:23:29,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 21:23:29,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 21:23:29,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 21:23:29,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 21:23:29,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 21:23:29,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 21:23:29,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 21:23:29,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 21:23:29,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 21:23:29,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 21:23:29,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 21:23:29,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 21:23:29,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 21:23:29,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 21:23:29,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 21:23:29,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 21:23:29,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 21:23:29,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 21:23:29,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 21:23:29,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 21:23:29,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 21:23:29,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 21:23:29,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 21:23:29,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 21:23:29,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 21:23:29,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 21:23:29,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 21:23:29,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 21:23:29,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 21:23:29,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 21:23:29,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 21:23:29,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 21:23:29,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 21:23:29,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 21:23:29,135 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 21:23:29,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 21:23:29,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 21:23:29,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 21:23:29,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 21:23:29,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 21:23:29,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 21:23:29,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 21:23:29,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 21:23:29,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 21:23:29,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 21:23:29,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 21:23:29,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 21:23:29,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 21:23:29,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 21:23:29,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 21:23:29,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 21:23:29,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 21:23:29,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 21:23:29,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 21:23:29,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 21:23:29,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 21:23:29,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 21:23:29,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 21:23:29,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 21:23:29,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 21:23:29,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c78ec383567aee735f8895b5666134248c3b9de1b96295d83b3c1c6979534c2b [2021-11-07 21:23:29,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 21:23:29,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 21:23:29,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 21:23:29,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 21:23:29,403 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 21:23:29,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i [2021-11-07 21:23:29,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1be9e5567/aa5d099ed154492881dc6cbfba6a981f/FLAG7326b7c1b [2021-11-07 21:23:29,916 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 21:23:29,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i [2021-11-07 21:23:29,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1be9e5567/aa5d099ed154492881dc6cbfba6a981f/FLAG7326b7c1b [2021-11-07 21:23:30,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1be9e5567/aa5d099ed154492881dc6cbfba6a981f [2021-11-07 21:23:30,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 21:23:30,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 21:23:30,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 21:23:30,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 21:23:30,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 21:23:30,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:23:30" (1/1) ... [2021-11-07 21:23:30,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d505141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:30, skipping insertion in model container [2021-11-07 21:23:30,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:23:30" (1/1) ... [2021-11-07 21:23:30,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 21:23:30,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 21:23:30,677 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_test5-2.i[33021,33034] [2021-11-07 21:23:30,848 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_test5-2.i[49681,49694] [2021-11-07 21:23:30,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 21:23:30,872 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 21:23:30,904 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_test5-2.i[33021,33034] [2021-11-07 21:23:31,008 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_test5-2.i[49681,49694] [2021-11-07 21:23:31,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 21:23:31,065 INFO L208 MainTranslator]: Completed translation [2021-11-07 21:23:31,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31 WrapperNode [2021-11-07 21:23:31,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 21:23:31,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 21:23:31,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 21:23:31,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 21:23:31,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (1/1) ... [2021-11-07 21:23:31,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (1/1) ... [2021-11-07 21:23:31,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 21:23:31,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 21:23:31,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 21:23:31,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 21:23:31,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (1/1) ... [2021-11-07 21:23:31,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (1/1) ... [2021-11-07 21:23:31,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (1/1) ... [2021-11-07 21:23:31,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (1/1) ... [2021-11-07 21:23:31,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (1/1) ... [2021-11-07 21:23:31,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (1/1) ... [2021-11-07 21:23:31,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (1/1) ... [2021-11-07 21:23:31,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 21:23:31,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 21:23:31,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 21:23:31,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 21:23:31,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (1/1) ... [2021-11-07 21:23:31,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 21:23:31,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:31,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 21:23:31,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 21:23:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 21:23:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 21:23:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 21:23:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 21:23:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 21:23:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 21:23:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 21:23:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 21:23:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 21:23:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 21:23:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 21:23:32,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 21:23:32,732 INFO L299 CfgBuilder]: Removed 120 assume(true) statements. [2021-11-07 21:23:32,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:23:32 BoogieIcfgContainer [2021-11-07 21:23:32,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 21:23:32,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 21:23:32,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 21:23:32,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 21:23:32,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:23:30" (1/3) ... [2021-11-07 21:23:32,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2be93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:23:32, skipping insertion in model container [2021-11-07 21:23:32,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:31" (2/3) ... [2021-11-07 21:23:32,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2be93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:23:32, skipping insertion in model container [2021-11-07 21:23:32,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:23:32" (3/3) ... [2021-11-07 21:23:32,744 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-2.i [2021-11-07 21:23:32,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 21:23:32,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 21:23:32,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 21:23:32,808 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 21:23:32,809 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 21:23:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 280 states have (on average 1.7214285714285715) internal successors, (482), 286 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 21:23:32,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:32,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:32,850 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:32,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:32,854 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-07 21:23:32,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:32,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263065608] [2021-11-07 21:23:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:32,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:23:33,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:33,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263065608] [2021-11-07 21:23:33,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263065608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:23:33,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:23:33,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 21:23:33,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33405210] [2021-11-07 21:23:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:23:33,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 21:23:33,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:33,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 21:23:33,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 21:23:33,040 INFO L87 Difference]: Start difference. First operand has 287 states, 280 states have (on average 1.7214285714285715) internal successors, (482), 286 states have internal predecessors, (482), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:33,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:33,093 INFO L93 Difference]: Finished difference Result 572 states and 962 transitions. [2021-11-07 21:23:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 21:23:33,095 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 21:23:33,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:33,110 INFO L225 Difference]: With dead ends: 572 [2021-11-07 21:23:33,111 INFO L226 Difference]: Without dead ends: 254 [2021-11-07 21:23:33,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 21:23:33,122 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:33,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 3.79ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 21:23:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-07 21:23:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-07 21:23:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-07 21:23:33,185 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-07 21:23:33,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:33,186 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-07 21:23:33,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-07 21:23:33,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 21:23:33,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:33,189 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] [2021-11-07 21:23:33,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 21:23:33,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:33,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:33,192 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-07 21:23:33,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:33,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351154630] [2021-11-07 21:23:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:33,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:33,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:33,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236495265] [2021-11-07 21:23:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:33,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:33,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:33,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 21:23:33,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 21:23:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:33,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 21:23:33,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:23:33,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:23:33,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:33,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351154630] [2021-11-07 21:23:33,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:33,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236495265] [2021-11-07 21:23:33,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236495265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:23:33,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:23:33,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 21:23:33,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397385740] [2021-11-07 21:23:33,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:23:33,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 21:23:33,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:33,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 21:23:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:33,588 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:33,653 INFO L93 Difference]: Finished difference Result 587 states and 769 transitions. [2021-11-07 21:23:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:23:33,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-07 21:23:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:33,660 INFO L225 Difference]: With dead ends: 587 [2021-11-07 21:23:33,660 INFO L226 Difference]: Without dead ends: 505 [2021-11-07 21:23:33,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:33,665 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 327 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.64ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:33,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 653 Invalid, 12 Unknown, 0 Unchecked, 4.53ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 37.64ms Time] [2021-11-07 21:23:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-07 21:23:33,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 255. [2021-11-07 21:23:33,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 249 states have (on average 1.3413654618473896) internal successors, (334), 254 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 334 transitions. [2021-11-07 21:23:33,688 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 334 transitions. Word has length 42 [2021-11-07 21:23:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:33,693 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 334 transitions. [2021-11-07 21:23:33,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:33,693 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 334 transitions. [2021-11-07 21:23:33,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 21:23:33,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:33,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:33,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:33,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:33,928 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:33,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1837409632, now seen corresponding path program 1 times [2021-11-07 21:23:33,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:33,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759634107] [2021-11-07 21:23:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:33,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:33,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:33,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581381513] [2021-11-07 21:23:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:33,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:33,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:33,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 21:23:33,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 21:23:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:34,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 21:23:34,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:23:34,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:23:34,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:34,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759634107] [2021-11-07 21:23:34,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:34,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581381513] [2021-11-07 21:23:34,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581381513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:23:34,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:23:34,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 21:23:34,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162910062] [2021-11-07 21:23:34,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:23:34,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 21:23:34,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 21:23:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:34,488 INFO L87 Difference]: Start difference. First operand 255 states and 334 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:34,562 INFO L93 Difference]: Finished difference Result 528 states and 696 transitions. [2021-11-07 21:23:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:23:34,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-11-07 21:23:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:34,564 INFO L225 Difference]: With dead ends: 528 [2021-11-07 21:23:34,564 INFO L226 Difference]: Without dead ends: 276 [2021-11-07 21:23:34,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:34,567 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 9 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.09ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.34ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:34,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 611 Invalid, 72 Unknown, 0 Unchecked, 4.09ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 58.34ms Time] [2021-11-07 21:23:34,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-07 21:23:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2021-11-07 21:23:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 269 states have (on average 1.3159851301115242) internal successors, (354), 274 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 354 transitions. [2021-11-07 21:23:34,584 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 354 transitions. Word has length 140 [2021-11-07 21:23:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:34,585 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 354 transitions. [2021-11-07 21:23:34,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 354 transitions. [2021-11-07 21:23:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 21:23:34,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:34,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:34,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:34,811 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,SelfDestructingSolverStorable2 [2021-11-07 21:23:34,812 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:34,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1273244828, now seen corresponding path program 1 times [2021-11-07 21:23:34,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:34,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840553167] [2021-11-07 21:23:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:34,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:34,830 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:34,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878746570] [2021-11-07 21:23:34,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:34,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:34,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:34,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 21:23:34,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 21:23:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:35,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 21:23:35,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:23:35,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:23:35,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:35,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840553167] [2021-11-07 21:23:35,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:35,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878746570] [2021-11-07 21:23:35,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878746570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:23:35,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:23:35,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 21:23:35,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534034880] [2021-11-07 21:23:35,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:23:35,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 21:23:35,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:35,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 21:23:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:35,294 INFO L87 Difference]: Start difference. First operand 275 states and 354 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:35,353 INFO L93 Difference]: Finished difference Result 568 states and 736 transitions. [2021-11-07 21:23:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:23:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-11-07 21:23:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:35,365 INFO L225 Difference]: With dead ends: 568 [2021-11-07 21:23:35,365 INFO L226 Difference]: Without dead ends: 296 [2021-11-07 21:23:35,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:35,369 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 9 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.32ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.93ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:35,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 611 Invalid, 72 Unknown, 0 Unchecked, 1.32ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 50.93ms Time] [2021-11-07 21:23:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-07 21:23:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2021-11-07 21:23:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.2941176470588236) internal successors, (374), 294 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 374 transitions. [2021-11-07 21:23:35,377 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 374 transitions. Word has length 140 [2021-11-07 21:23:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:35,378 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 374 transitions. [2021-11-07 21:23:35,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 374 transitions. [2021-11-07 21:23:35,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 21:23:35,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:35,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:35,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:35,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:35,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:35,604 INFO L85 PathProgramCache]: Analyzing trace with hash -882913824, now seen corresponding path program 1 times [2021-11-07 21:23:35,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:35,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305090026] [2021-11-07 21:23:35,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:35,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:35,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:35,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414346287] [2021-11-07 21:23:35,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:35,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:35,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:35,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 21:23:35,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 21:23:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:35,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 21:23:35,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 21:23:36,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:23:36,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:36,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305090026] [2021-11-07 21:23:36,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:36,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414346287] [2021-11-07 21:23:36,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414346287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:23:36,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:23:36,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 21:23:36,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717975777] [2021-11-07 21:23:36,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:23:36,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 21:23:36,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:36,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 21:23:36,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:36,069 INFO L87 Difference]: Start difference. First operand 295 states and 374 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:36,128 INFO L93 Difference]: Finished difference Result 397 states and 510 transitions. [2021-11-07 21:23:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:23:36,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-11-07 21:23:36,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:36,130 INFO L225 Difference]: With dead ends: 397 [2021-11-07 21:23:36,130 INFO L226 Difference]: Without dead ends: 316 [2021-11-07 21:23:36,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:36,131 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 10 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.29ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:36,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 611 Invalid, 72 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 51.29ms Time] [2021-11-07 21:23:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-07 21:23:36,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-11-07 21:23:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 309 states have (on average 1.2750809061488673) internal successors, (394), 314 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:36,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 394 transitions. [2021-11-07 21:23:36,138 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 394 transitions. Word has length 140 [2021-11-07 21:23:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:36,139 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 394 transitions. [2021-11-07 21:23:36,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 394 transitions. [2021-11-07 21:23:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 21:23:36,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:36,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:36,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:36,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:36,355 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:36,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:36,355 INFO L85 PathProgramCache]: Analyzing trace with hash 115522276, now seen corresponding path program 1 times [2021-11-07 21:23:36,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:36,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075236150] [2021-11-07 21:23:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:36,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:36,371 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:36,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196744610] [2021-11-07 21:23:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:36,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:36,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:36,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 21:23:36,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 21:23:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:36,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 21:23:36,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:23:36,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:23:36,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:36,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075236150] [2021-11-07 21:23:36,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:36,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196744610] [2021-11-07 21:23:36,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196744610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:23:36,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:23:36,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 21:23:36,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403631129] [2021-11-07 21:23:36,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:23:36,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 21:23:36,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:36,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 21:23:36,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 21:23:36,795 INFO L87 Difference]: Start difference. First operand 315 states and 394 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:36,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:36,871 INFO L93 Difference]: Finished difference Result 619 states and 777 transitions. [2021-11-07 21:23:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 21:23:36,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-11-07 21:23:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:36,874 INFO L225 Difference]: With dead ends: 619 [2021-11-07 21:23:36,874 INFO L226 Difference]: Without dead ends: 307 [2021-11-07 21:23:36,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 21:23:36,875 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 321 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.74ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:36,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 619 Invalid, 66 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 51.74ms Time] [2021-11-07 21:23:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-07 21:23:36,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2021-11-07 21:23:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 295 states have (on average 1.264406779661017) internal successors, (373), 300 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 373 transitions. [2021-11-07 21:23:36,883 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 373 transitions. Word has length 140 [2021-11-07 21:23:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:36,883 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 373 transitions. [2021-11-07 21:23:36,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 373 transitions. [2021-11-07 21:23:36,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 21:23:36,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:36,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:36,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:37,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:37,100 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:37,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash 32737814, now seen corresponding path program 1 times [2021-11-07 21:23:37,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:37,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883068468] [2021-11-07 21:23:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:37,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:37,118 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:37,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006318144] [2021-11-07 21:23:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:37,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:37,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:37,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 21:23:37,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 21:23:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:37,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 21:23:37,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:23:37,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:23:37,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:37,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883068468] [2021-11-07 21:23:37,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:37,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006318144] [2021-11-07 21:23:37,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006318144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:23:37,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:23:37,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 21:23:37,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016004650] [2021-11-07 21:23:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:23:37,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 21:23:37,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 21:23:37,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 21:23:37,493 INFO L87 Difference]: Start difference. First operand 301 states and 373 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:37,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:37,563 INFO L93 Difference]: Finished difference Result 680 states and 844 transitions. [2021-11-07 21:23:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 21:23:37,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-11-07 21:23:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:37,566 INFO L225 Difference]: With dead ends: 680 [2021-11-07 21:23:37,566 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 21:23:37,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 21:23:37,568 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 314 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.62ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:37,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 914 Invalid, 66 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 53.62ms Time] [2021-11-07 21:23:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 21:23:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 287. [2021-11-07 21:23:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 281 states have (on average 1.2526690391459074) internal successors, (352), 286 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 352 transitions. [2021-11-07 21:23:37,577 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 352 transitions. Word has length 140 [2021-11-07 21:23:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:37,578 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 352 transitions. [2021-11-07 21:23:37,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 352 transitions. [2021-11-07 21:23:37,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 21:23:37,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:37,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:37,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:37,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:37,796 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash -577227484, now seen corresponding path program 1 times [2021-11-07 21:23:37,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:37,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034788674] [2021-11-07 21:23:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:37,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:37,810 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:37,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386857672] [2021-11-07 21:23:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:37,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:37,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:37,812 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 21:23:37,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 21:23:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:37,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 21:23:37,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 21:23:38,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:23:38,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:38,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034788674] [2021-11-07 21:23:38,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:38,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386857672] [2021-11-07 21:23:38,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386857672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:23:38,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:23:38,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 21:23:38,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090384074] [2021-11-07 21:23:38,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:23:38,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 21:23:38,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:38,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 21:23:38,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 21:23:38,227 INFO L87 Difference]: Start difference. First operand 287 states and 352 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:38,294 INFO L93 Difference]: Finished difference Result 379 states and 468 transitions. [2021-11-07 21:23:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 21:23:38,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-11-07 21:23:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:38,296 INFO L225 Difference]: With dead ends: 379 [2021-11-07 21:23:38,296 INFO L226 Difference]: Without dead ends: 278 [2021-11-07 21:23:38,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 21:23:38,297 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 95 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.54ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.19ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:38,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 797 Invalid, 66 Unknown, 0 Unchecked, 5.54ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 50.19ms Time] [2021-11-07 21:23:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-07 21:23:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2021-11-07 21:23:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 267 states have (on average 1.2397003745318351) internal successors, (331), 272 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 331 transitions. [2021-11-07 21:23:38,305 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 331 transitions. Word has length 140 [2021-11-07 21:23:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:38,306 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 331 transitions. [2021-11-07 21:23:38,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 331 transitions. [2021-11-07 21:23:38,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 21:23:38,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:38,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:38,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:38,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:38,532 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:38,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:38,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1460076330, now seen corresponding path program 1 times [2021-11-07 21:23:38,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:38,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835696459] [2021-11-07 21:23:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:38,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:38,546 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:38,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722153028] [2021-11-07 21:23:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:38,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:38,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:38,547 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) [2021-11-07 21:23:38,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 21:23:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:38,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 21:23:38,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:23:38,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 21:23:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:23:39,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:39,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835696459] [2021-11-07 21:23:39,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:39,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722153028] [2021-11-07 21:23:39,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722153028] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 21:23:39,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 21:23:39,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-07 21:23:39,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137085366] [2021-11-07 21:23:39,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 21:23:39,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 21:23:39,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 21:23:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 21:23:39,248 INFO L87 Difference]: Start difference. First operand 273 states and 331 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:39,311 INFO L93 Difference]: Finished difference Result 1081 states and 1313 transitions. [2021-11-07 21:23:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 21:23:39,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 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 140 [2021-11-07 21:23:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:39,315 INFO L225 Difference]: With dead ends: 1081 [2021-11-07 21:23:39,316 INFO L226 Difference]: Without dead ends: 993 [2021-11-07 21:23:39,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.00ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 21:23:39,317 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 1335 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.07ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:39,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 1123 Invalid, 31 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 31.07ms Time] [2021-11-07 21:23:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-11-07 21:23:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 819. [2021-11-07 21:23:39,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 813 states have (on average 1.2263222632226323) internal successors, (997), 818 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:39,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 997 transitions. [2021-11-07 21:23:39,338 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 997 transitions. Word has length 140 [2021-11-07 21:23:39,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:39,339 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 997 transitions. [2021-11-07 21:23:39,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:39,339 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 997 transitions. [2021-11-07 21:23:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-11-07 21:23:39,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:39,346 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:39,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:39,559 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,SelfDestructingSolverStorable8 [2021-11-07 21:23:39,559 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:39,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:39,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1752556443, now seen corresponding path program 2 times [2021-11-07 21:23:39,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:39,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211060232] [2021-11-07 21:23:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:39,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:39,610 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:39,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178945319] [2021-11-07 21:23:39,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 21:23:39,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:39,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:39,612 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) [2021-11-07 21:23:39,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 21:23:39,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 21:23:39,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 21:23:39,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 21:23:39,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:23:40,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 21:23:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 21:23:41,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:41,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211060232] [2021-11-07 21:23:41,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:41,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178945319] [2021-11-07 21:23:41,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178945319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 21:23:41,656 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 21:23:41,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-07 21:23:41,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458008276] [2021-11-07 21:23:41,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 21:23:41,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 21:23:41,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 21:23:41,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 21:23:41,659 INFO L87 Difference]: Start difference. First operand 819 states and 997 transitions. Second operand has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:41,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:41,848 INFO L93 Difference]: Finished difference Result 2434 states and 2960 transitions. [2021-11-07 21:23:41,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 21:23:41,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 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 434 [2021-11-07 21:23:41,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:41,857 INFO L225 Difference]: With dead ends: 2434 [2021-11-07 21:23:41,858 INFO L226 Difference]: Without dead ends: 2346 [2021-11-07 21:23:41,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.04ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 21:23:41,859 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 3522 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3522 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.50ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.78ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:41,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3522 Valid, 2943 Invalid, 70 Unknown, 0 Unchecked, 8.50ms Time], IncrementalHoareTripleChecker [16 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 58.78ms Time] [2021-11-07 21:23:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2021-11-07 21:23:41,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1911. [2021-11-07 21:23:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1905 states have (on average 1.2225721784776904) internal successors, (2329), 1910 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2329 transitions. [2021-11-07 21:23:41,904 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2329 transitions. Word has length 434 [2021-11-07 21:23:41,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:41,905 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 2329 transitions. [2021-11-07 21:23:41,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:41,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2329 transitions. [2021-11-07 21:23:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2021-11-07 21:23:41,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:41,936 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:41,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:42,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 21:23:42,160 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:42,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash -675748379, now seen corresponding path program 3 times [2021-11-07 21:23:42,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:42,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820127975] [2021-11-07 21:23:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:42,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:42,199 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:42,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896523666] [2021-11-07 21:23:42,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 21:23:42,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:42,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:42,201 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) [2021-11-07 21:23:42,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 21:23:42,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 21:23:42,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 21:23:42,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 21:23:42,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4420 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 4275 trivial. 0 not checked. [2021-11-07 21:23:46,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:23:46,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:46,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820127975] [2021-11-07 21:23:46,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:46,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896523666] [2021-11-07 21:23:46,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896523666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:23:46,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:23:46,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 21:23:46,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938865830] [2021-11-07 21:23:46,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:23:46,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 21:23:46,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:46,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 21:23:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:46,376 INFO L87 Difference]: Start difference. First operand 1911 states and 2329 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:46,441 INFO L93 Difference]: Finished difference Result 3746 states and 4565 transitions. [2021-11-07 21:23:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:23:46,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 1022 [2021-11-07 21:23:46,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:46,448 INFO L225 Difference]: With dead ends: 3746 [2021-11-07 21:23:46,449 INFO L226 Difference]: Without dead ends: 1980 [2021-11-07 21:23:46,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:46,452 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 149 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.03ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:46,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 642 Invalid, 14 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 33.03ms Time] [2021-11-07 21:23:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2021-11-07 21:23:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1968. [2021-11-07 21:23:46,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1962 states have (on average 1.2237512742099899) internal successors, (2401), 1967 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2401 transitions. [2021-11-07 21:23:46,494 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2401 transitions. Word has length 1022 [2021-11-07 21:23:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:46,494 INFO L470 AbstractCegarLoop]: Abstraction has 1968 states and 2401 transitions. [2021-11-07 21:23:46,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2401 transitions. [2021-11-07 21:23:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2021-11-07 21:23:46,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:46,505 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:46,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:46,730 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,SelfDestructingSolverStorable10 [2021-11-07 21:23:46,730 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:46,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:46,731 INFO L85 PathProgramCache]: Analyzing trace with hash -680932187, now seen corresponding path program 1 times [2021-11-07 21:23:46,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:46,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361263210] [2021-11-07 21:23:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:46,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:46,771 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:46,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190566576] [2021-11-07 21:23:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:46,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:46,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:46,772 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) [2021-11-07 21:23:46,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 21:23:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:47,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 21:23:47,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 10 proven. 738 refuted. 0 times theorem prover too weak. 3654 trivial. 0 not checked. [2021-11-07 21:23:49,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 21:23:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 10 proven. 738 refuted. 0 times theorem prover too weak. 3654 trivial. 0 not checked. [2021-11-07 21:23:50,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:50,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361263210] [2021-11-07 21:23:50,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:50,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190566576] [2021-11-07 21:23:50,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190566576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 21:23:50,909 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 21:23:50,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-11-07 21:23:50,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268243100] [2021-11-07 21:23:50,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 21:23:50,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 21:23:50,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:50,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 21:23:50,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 21:23:50,911 INFO L87 Difference]: Start difference. First operand 1968 states and 2401 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:51,772 INFO L93 Difference]: Finished difference Result 3478 states and 4245 transitions. [2021-11-07 21:23:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 21:23:51,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 1029 [2021-11-07 21:23:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:51,780 INFO L225 Difference]: With dead ends: 3478 [2021-11-07 21:23:51,780 INFO L226 Difference]: Without dead ends: 1828 [2021-11-07 21:23:51,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2057 GetRequests, 2054 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 21:23:51,783 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 382 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 774.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 827.05ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:51,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 492 Invalid, 127 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 827.05ms Time] [2021-11-07 21:23:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-11-07 21:23:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1828. [2021-11-07 21:23:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1822 states have (on average 1.216794731064764) internal successors, (2217), 1827 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2217 transitions. [2021-11-07 21:23:51,824 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2217 transitions. Word has length 1029 [2021-11-07 21:23:51,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:51,826 INFO L470 AbstractCegarLoop]: Abstraction has 1828 states and 2217 transitions. [2021-11-07 21:23:51,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2217 transitions. [2021-11-07 21:23:51,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2021-11-07 21:23:51,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:51,837 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:51,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:52,060 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,SelfDestructingSolverStorable11 [2021-11-07 21:23:52,061 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:52,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:52,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1248973059, now seen corresponding path program 1 times [2021-11-07 21:23:52,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:52,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903099858] [2021-11-07 21:23:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:52,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:52,096 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:52,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305907264] [2021-11-07 21:23:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:52,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:52,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:52,098 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) [2021-11-07 21:23:52,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 21:23:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 21:23:52,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 21:23:52,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 21:23:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4077 trivial. 0 not checked. [2021-11-07 21:23:54,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 21:23:54,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 21:23:54,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903099858] [2021-11-07 21:23:54,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 21:23:54,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305907264] [2021-11-07 21:23:54,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305907264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 21:23:54,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 21:23:54,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 21:23:54,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033051482] [2021-11-07 21:23:54,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 21:23:54,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 21:23:54,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 21:23:54,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 21:23:54,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:54,151 INFO L87 Difference]: Start difference. First operand 1828 states and 2217 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:54,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 21:23:54,204 INFO L93 Difference]: Finished difference Result 3598 states and 4368 transitions. [2021-11-07 21:23:54,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 21:23:54,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 1036 [2021-11-07 21:23:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 21:23:54,213 INFO L225 Difference]: With dead ends: 3598 [2021-11-07 21:23:54,213 INFO L226 Difference]: Without dead ends: 1826 [2021-11-07 21:23:54,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1034 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 21:23:54,218 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 19 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.50ms IncrementalHoareTripleChecker+Time [2021-11-07 21:23:54,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 604 Invalid, 7 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 29.50ms Time] [2021-11-07 21:23:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2021-11-07 21:23:54,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1826. [2021-11-07 21:23:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1820 states have (on average 1.2164835164835164) internal successors, (2214), 1825 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2214 transitions. [2021-11-07 21:23:54,259 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2214 transitions. Word has length 1036 [2021-11-07 21:23:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 21:23:54,259 INFO L470 AbstractCegarLoop]: Abstraction has 1826 states and 2214 transitions. [2021-11-07 21:23:54,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 21:23:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2214 transitions. [2021-11-07 21:23:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2021-11-07 21:23:54,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 21:23:54,278 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 21:23:54,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 21:23:54,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 21:23:54,497 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 21:23:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 21:23:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1492434163, now seen corresponding path program 1 times [2021-11-07 21:23:54,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 21:23:54,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951527535] [2021-11-07 21:23:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:54,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 21:23:54,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 21:23:54,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201592136] [2021-11-07 21:23:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 21:23:54,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 21:23:54,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 21:23:54,538 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 21:23:54,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Killed by 15