./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.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_SAX_test1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 22:22:33,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:22:33,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:22:33,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:22:33,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:22:33,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:22:33,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:22:33,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:22:33,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:22:33,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:22:33,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:22:33,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:22:33,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:22:33,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:22:33,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:22:33,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:22:33,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:22:33,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:22:33,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:22:33,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:22:33,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:22:33,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:22:33,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:22:33,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:22:33,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:22:33,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:22:33,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:22:33,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:22:33,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:22:33,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:22:33,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:22:33,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:22:33,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:22:33,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:22:33,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:22:33,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:22:33,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:22:33,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:22:33,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:22:33,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:22:33,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:22:33,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 22:22:33,240 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:22:33,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:22:33,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:22:33,241 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:22:33,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:22:33,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:22:33,242 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:22:33,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:22:33,243 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:22:33,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 22:22:33,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:22:33,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:22:33,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:22:33,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:22:33,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:22:33,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:22:33,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:22:33,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:22:33,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:22:33,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:22:33,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:22:33,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:22:33,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:22:33,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:22:33,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:22:33,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:22:33,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 22:22:33,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 22:22:33,247 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:22:33,247 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:22:33,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:22:33,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:22:33,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-11-07 22:22:33,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:22:33,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:22:33,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:22:33,561 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:22:33,561 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:22:33,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-07 22:22:33,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053353c00/2328134d746e429c990f6932a71b6428/FLAG8b61d86f4 [2021-11-07 22:22:34,109 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:22:34,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-07 22:22:34,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053353c00/2328134d746e429c990f6932a71b6428/FLAG8b61d86f4 [2021-11-07 22:22:34,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053353c00/2328134d746e429c990f6932a71b6428 [2021-11-07 22:22:34,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:22:34,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:22:34,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:22:34,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:22:34,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:22:34,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:22:34" (1/1) ... [2021-11-07 22:22:34,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee1db3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:34, skipping insertion in model container [2021-11-07 22:22:34,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:22:34" (1/1) ... [2021-11-07 22:22:34,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:22:34,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:22:35,025 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_SAX_test1-1.i[33021,33034] [2021-11-07 22:22:35,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:22:35,131 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:22:35,153 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_SAX_test1-1.i[33021,33034] [2021-11-07 22:22:35,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:22:35,217 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:22:35,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35 WrapperNode [2021-11-07 22:22:35,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:22:35,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:22:35,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:22:35,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:22:35,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (1/1) ... [2021-11-07 22:22:35,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (1/1) ... [2021-11-07 22:22:35,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:22:35,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:22:35,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:22:35,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:22:35,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (1/1) ... [2021-11-07 22:22:35,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (1/1) ... [2021-11-07 22:22:35,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (1/1) ... [2021-11-07 22:22:35,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (1/1) ... [2021-11-07 22:22:35,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (1/1) ... [2021-11-07 22:22:35,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (1/1) ... [2021-11-07 22:22:35,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (1/1) ... [2021-11-07 22:22:35,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:22:35,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:22:35,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:22:35,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:22:35,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (1/1) ... [2021-11-07 22:22:35,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:22:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:22:35,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 22:22:35,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 22:22:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 22:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 22:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:22:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:22:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:22:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 22:22:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:22:35,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:22:36,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:22:36,329 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-07 22:22:36,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:22:36 BoogieIcfgContainer [2021-11-07 22:22:36,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:22:36,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:22:36,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:22:36,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:22:36,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:22:34" (1/3) ... [2021-11-07 22:22:36,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3239f0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:22:36, skipping insertion in model container [2021-11-07 22:22:36,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:22:35" (2/3) ... [2021-11-07 22:22:36,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3239f0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:22:36, skipping insertion in model container [2021-11-07 22:22:36,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:22:36" (3/3) ... [2021-11-07 22:22:36,339 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2021-11-07 22:22:36,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:22:36,342 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 22:22:36,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:22:36,387 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 22:22:36,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 22:22:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 127 states have (on average 1.7401574803149606) internal successors, (221), 137 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:36,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 22:22:36,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:22:36,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:22:36,407 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:22:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:22:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1407226647, now seen corresponding path program 1 times [2021-11-07 22:22:36,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:22:36,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474820176] [2021-11-07 22:22:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:36,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:22:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:22:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:22:36,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:22:36,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474820176] [2021-11-07 22:22:36,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474820176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:22:36,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:22:36,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 22:22:36,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531383990] [2021-11-07 22:22:36,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:22:36,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:22:36,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:22:36,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:22:36,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:22:36,579 INFO L87 Difference]: Start difference. First operand has 138 states, 127 states have (on average 1.7401574803149606) internal successors, (221), 137 states have internal predecessors, (221), 0 states have call successors, (0), 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 22:22:36,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:22:36,624 INFO L93 Difference]: Finished difference Result 274 states and 440 transitions. [2021-11-07 22:22:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:22:36,626 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 22:22:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:22:36,637 INFO L225 Difference]: With dead ends: 274 [2021-11-07 22:22:36,637 INFO L226 Difference]: Without dead ends: 134 [2021-11-07 22:22:36,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:22:36,645 INFO L933 BasicCegarLoop]: 176 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, 176 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:22:36,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 4.84ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:22:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-07 22:22:36,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-07 22:22:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 133 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2021-11-07 22:22:36,698 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 8 [2021-11-07 22:22:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:22:36,699 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2021-11-07 22:22:36,699 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 22:22:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2021-11-07 22:22:36,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 22:22:36,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:22:36,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:22:36,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 22:22:36,701 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:22:36,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:22:36,704 INFO L85 PathProgramCache]: Analyzing trace with hash 569968710, now seen corresponding path program 1 times [2021-11-07 22:22:36,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:22:36,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038773351] [2021-11-07 22:22:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:36,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:22:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:22:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:22:36,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:22:36,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038773351] [2021-11-07 22:22:36,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038773351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:22:36,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:22:36,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:22:36,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46719263] [2021-11-07 22:22:36,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:22:36,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:22:36,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:22:36,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:22:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:22:36,788 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 22:22:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:22:36,816 INFO L93 Difference]: Finished difference Result 266 states and 342 transitions. [2021-11-07 22:22:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:22:36,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 22:22:36,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:22:36,819 INFO L225 Difference]: With dead ends: 266 [2021-11-07 22:22:36,819 INFO L226 Difference]: Without dead ends: 221 [2021-11-07 22:22:36,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:22:36,821 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 113 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.96ms IncrementalHoareTripleChecker+Time [2021-11-07 22:22:36,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 2.89ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 10.96ms Time] [2021-11-07 22:22:36,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-07 22:22:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 135. [2021-11-07 22:22:36,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 125 states have (on average 1.384) internal successors, (173), 134 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 173 transitions. [2021-11-07 22:22:36,830 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 173 transitions. Word has length 8 [2021-11-07 22:22:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:22:36,831 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 173 transitions. [2021-11-07 22:22:36,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 22:22:36,831 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 173 transitions. [2021-11-07 22:22:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 22:22:36,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:22:36,847 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] [2021-11-07 22:22:36,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 22:22:36,849 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:22:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:22:36,851 INFO L85 PathProgramCache]: Analyzing trace with hash -781067853, now seen corresponding path program 1 times [2021-11-07 22:22:36,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:22:36,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414425351] [2021-11-07 22:22:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:36,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:22:36,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:22:36,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852940128] [2021-11-07 22:22:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:36,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:22:36,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:22:36,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:22:36,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 22:22:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:22:37,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:22:37,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:22:37,235 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 22:22:37,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:22:37,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:22:37,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414425351] [2021-11-07 22:22:37,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:22:37,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852940128] [2021-11-07 22:22:37,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852940128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:22:37,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:22:37,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:22:37,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553120945] [2021-11-07 22:22:37,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:22:37,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:22:37,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:22:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:22:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:22:37,238 INFO L87 Difference]: Start difference. First operand 135 states and 173 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:22:37,298 INFO L93 Difference]: Finished difference Result 288 states and 374 transitions. [2021-11-07 22:22:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:22:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-07 22:22:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:22:37,300 INFO L225 Difference]: With dead ends: 288 [2021-11-07 22:22:37,300 INFO L226 Difference]: Without dead ends: 156 [2021-11-07 22:22:37,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:22:37,302 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 9 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.58ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.93ms IncrementalHoareTripleChecker+Time [2021-11-07 22:22:37,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 289 Invalid, 72 Unknown, 0 Unchecked, 1.58ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 49.93ms Time] [2021-11-07 22:22:37,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-07 22:22:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2021-11-07 22:22:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 154 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 22:22:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2021-11-07 22:22:37,311 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 59 [2021-11-07 22:22:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:22:37,311 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2021-11-07 22:22:37,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2021-11-07 22:22:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 22:22:37,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:22:37,313 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] [2021-11-07 22:22:37,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 22:22:37,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:22:37,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:22:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:22:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1269877969, now seen corresponding path program 1 times [2021-11-07 22:22:37,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:22:37,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248969439] [2021-11-07 22:22:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:37,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:22:37,556 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:22:37,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669461035] [2021-11-07 22:22:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:37,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:22:37,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:22:37,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:22:37,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 22:22:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:22:37,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:22:37,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:22:37,813 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 22:22:37,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:22:37,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:22:37,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248969439] [2021-11-07 22:22:37,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:22:37,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669461035] [2021-11-07 22:22:37,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669461035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:22:37,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:22:37,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:22:37,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457215364] [2021-11-07 22:22:37,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:22:37,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:22:37,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:22:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:22:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:22:37,816 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:22:37,897 INFO L93 Difference]: Finished difference Result 299 states and 375 transitions. [2021-11-07 22:22:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:22:37,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-07 22:22:37,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:22:37,898 INFO L225 Difference]: With dead ends: 299 [2021-11-07 22:22:37,898 INFO L226 Difference]: Without dead ends: 147 [2021-11-07 22:22:37,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:22:37,909 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 160 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.53ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.26ms IncrementalHoareTripleChecker+Time [2021-11-07 22:22:37,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 297 Invalid, 66 Unknown, 0 Unchecked, 5.53ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 57.26ms Time] [2021-11-07 22:22:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-07 22:22:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2021-11-07 22:22:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 140 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-11-07 22:22:37,931 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 59 [2021-11-07 22:22:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:22:37,931 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-11-07 22:22:37,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:37,932 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-11-07 22:22:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 22:22:37,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:22:37,935 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] [2021-11-07 22:22:37,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 22:22:38,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-07 22:22:38,158 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:22:38,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:22:38,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1890386365, now seen corresponding path program 1 times [2021-11-07 22:22:38,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:22:38,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339755851] [2021-11-07 22:22:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:38,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:22:38,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:22:38,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344541500] [2021-11-07 22:22:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:38,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:22:38,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:22:38,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:22:38,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 22:22:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:22:38,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:22:38,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:22:38,472 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 22:22:38,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:22:38,619 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 22:22:38,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:22:38,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339755851] [2021-11-07 22:22:38,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:22:38,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344541500] [2021-11-07 22:22:38,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344541500] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:22:38,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:22:38,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-07 22:22:38,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004240024] [2021-11-07 22:22:38,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:22:38,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 22:22:38,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:22:38,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 22:22:38,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:22:38,622 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:22:38,659 INFO L93 Difference]: Finished difference Result 465 states and 569 transitions. [2021-11-07 22:22:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 22:22:38,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 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 59 [2021-11-07 22:22:38,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:22:38,662 INFO L225 Difference]: With dead ends: 465 [2021-11-07 22:22:38,662 INFO L226 Difference]: Without dead ends: 420 [2021-11-07 22:22:38,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.10ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:22:38,664 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 592 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.32ms IncrementalHoareTripleChecker+Time [2021-11-07 22:22:38,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 586 Invalid, 19 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 21.32ms Time] [2021-11-07 22:22:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-07 22:22:38,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2021-11-07 22:22:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 410 states have (on average 1.2463414634146341) internal successors, (511), 419 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 511 transitions. [2021-11-07 22:22:38,688 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 511 transitions. Word has length 59 [2021-11-07 22:22:38,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:22:38,690 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 511 transitions. [2021-11-07 22:22:38,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:38,690 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 511 transitions. [2021-11-07 22:22:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-07 22:22:38,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:22:38,697 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:22:38,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 22:22:38,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:22:38,921 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:22:38,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:22:38,922 INFO L85 PathProgramCache]: Analyzing trace with hash 292771206, now seen corresponding path program 2 times [2021-11-07 22:22:38,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:22:38,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111758698] [2021-11-07 22:22:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:38,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:22:38,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:22:38,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902812671] [2021-11-07 22:22:38,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:22:38,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:22:38,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:22:38,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:22:38,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 22:22:39,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 22:22:39,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:22:39,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 22:22:39,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:22:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-07 22:22:40,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:22:40,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:22:40,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111758698] [2021-11-07 22:22:40,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:22:40,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902812671] [2021-11-07 22:22:40,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902812671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:22:40,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:22:40,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:22:40,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601551022] [2021-11-07 22:22:40,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:22:40,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:22:40,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:22:40,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:22:40,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:22:40,093 INFO L87 Difference]: Start difference. First operand 420 states and 511 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:40,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:22:40,232 INFO L93 Difference]: Finished difference Result 782 states and 956 transitions. [2021-11-07 22:22:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:22:40,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 212 [2021-11-07 22:22:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:22:40,234 INFO L225 Difference]: With dead ends: 782 [2021-11-07 22:22:40,234 INFO L226 Difference]: Without dead ends: 418 [2021-11-07 22:22:40,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.32ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:22:40,236 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 19 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.02ms IncrementalHoareTripleChecker+Time [2021-11-07 22:22:40,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 443 Invalid, 42 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 127.02ms Time] [2021-11-07 22:22:40,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-07 22:22:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2021-11-07 22:22:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 408 states have (on average 1.2450980392156863) internal successors, (508), 417 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 508 transitions. [2021-11-07 22:22:40,246 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 508 transitions. Word has length 212 [2021-11-07 22:22:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:22:40,246 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 508 transitions. [2021-11-07 22:22:40,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:40,247 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 508 transitions. [2021-11-07 22:22:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-07 22:22:40,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:22:40,249 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, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:22:40,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 22:22:40,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:22:40,463 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:22:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:22:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash -202059402, now seen corresponding path program 1 times [2021-11-07 22:22:40,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:22:40,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471862424] [2021-11-07 22:22:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:40,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:22:40,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:22:40,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929258326] [2021-11-07 22:22:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:40,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:22:40,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:22:40,480 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:22:40,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 22:22:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:22:40,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 22:22:40,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:22:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:22:41,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:22:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:22:41,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:22:41,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471862424] [2021-11-07 22:22:41,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:22:41,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929258326] [2021-11-07 22:22:41,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929258326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:22:41,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:22:41,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-07 22:22:41,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867381730] [2021-11-07 22:22:41,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:22:41,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 22:22:41,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:22:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 22:22:41,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 22:22:41,617 INFO L87 Difference]: Start difference. First operand 418 states and 508 transitions. Second operand has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:22:41,727 INFO L93 Difference]: Finished difference Result 1021 states and 1247 transitions. [2021-11-07 22:22:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 22:22:41,728 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 0 states have call successors, (0), 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 219 [2021-11-07 22:22:41,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:22:41,732 INFO L225 Difference]: With dead ends: 1021 [2021-11-07 22:22:41,732 INFO L226 Difference]: Without dead ends: 976 [2021-11-07 22:22:41,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.90ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 22:22:41,733 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 2015 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.92ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.80ms IncrementalHoareTripleChecker+Time [2021-11-07 22:22:41,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2015 Valid, 1154 Invalid, 40 Unknown, 0 Unchecked, 4.92ms Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 44.80ms Time] [2021-11-07 22:22:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-07 22:22:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 976. [2021-11-07 22:22:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 966 states have (on average 1.2277432712215322) internal successors, (1186), 975 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1186 transitions. [2021-11-07 22:22:41,754 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1186 transitions. Word has length 219 [2021-11-07 22:22:41,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:22:41,756 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1186 transitions. [2021-11-07 22:22:41,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:22:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1186 transitions. [2021-11-07 22:22:41,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-11-07 22:22:41,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:22:41,781 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, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:22:41,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 22:22:41,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:22:41,992 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:22:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:22:41,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1985764010, now seen corresponding path program 2 times [2021-11-07 22:22:41,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:22:41,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215801914] [2021-11-07 22:22:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:22:41,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:22:42,028 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:22:42,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892497667] [2021-11-07 22:22:42,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:22:42,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:22:42,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:22:42,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:22:42,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 22:23:12,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:23:12,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:23:13,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 22:23:13,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:23:13,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 22:23:13,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:23:13,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:23:13,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215801914] [2021-11-07 22:23:13,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:23:13,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892497667] [2021-11-07 22:23:13,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892497667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:23:13,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:23:13,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:23:13,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949151191] [2021-11-07 22:23:13,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:23:13,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:23:13,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:23:13,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:23:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:23:13,850 INFO L87 Difference]: Start difference. First operand 976 states and 1186 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:23:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:23:13,885 INFO L93 Difference]: Finished difference Result 1909 states and 2332 transitions. [2021-11-07 22:23:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:23:13,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 525 [2021-11-07 22:23:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:23:13,890 INFO L225 Difference]: With dead ends: 1909 [2021-11-07 22:23:13,890 INFO L226 Difference]: Without dead ends: 986 [2021-11-07 22:23:13,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:23:13,892 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.27ms IncrementalHoareTripleChecker+Time [2021-11-07 22:23:13,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 12.27ms Time] [2021-11-07 22:23:13,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-07 22:23:13,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2021-11-07 22:23:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 976 states have (on average 1.2254098360655739) internal successors, (1196), 985 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:23:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1196 transitions. [2021-11-07 22:23:13,918 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1196 transitions. Word has length 525 [2021-11-07 22:23:13,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:23:13,918 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 1196 transitions. [2021-11-07 22:23:13,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:23:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1196 transitions. [2021-11-07 22:23:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2021-11-07 22:23:13,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:23:13,927 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, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:23:14,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 22:23:14,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:23:14,148 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:23:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:23:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1773801099, now seen corresponding path program 1 times [2021-11-07 22:23:14,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:23:14,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026357506] [2021-11-07 22:23:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:23:14,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:23:14,178 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:23:14,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874159625] [2021-11-07 22:23:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:23:14,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:23:14,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:23:14,180 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:23:14,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 22:27:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:27:50,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:27:50,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:27:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2288 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2021-11-07 22:27:51,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:27:51,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:27:51,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026357506] [2021-11-07 22:27:51,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:27:51,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874159625] [2021-11-07 22:27:51,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874159625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:27:51,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:27:51,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:27:51,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877530652] [2021-11-07 22:27:51,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:27:51,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:27:51,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:27:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:27:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:27:51,470 INFO L87 Difference]: Start difference. First operand 986 states and 1196 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:27:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:27:51,500 INFO L93 Difference]: Finished difference Result 1932 states and 2356 transitions. [2021-11-07 22:27:51,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:27:51,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 526 [2021-11-07 22:27:51,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:27:51,504 INFO L225 Difference]: With dead ends: 1932 [2021-11-07 22:27:51,505 INFO L226 Difference]: Without dead ends: 996 [2021-11-07 22:27:51,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:27:51,507 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.57ms IncrementalHoareTripleChecker+Time [2021-11-07 22:27:51,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.64ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 13.57ms Time] [2021-11-07 22:27:51,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-07 22:27:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2021-11-07 22:27:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 986 states have (on average 1.2231237322515214) internal successors, (1206), 995 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:27:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1206 transitions. [2021-11-07 22:27:51,529 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1206 transitions. Word has length 526 [2021-11-07 22:27:51,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:27:51,529 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1206 transitions. [2021-11-07 22:27:51,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:27:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1206 transitions. [2021-11-07 22:27:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2021-11-07 22:27:51,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:27:51,538 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, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:27:51,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 22:27:51,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:27:51,752 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:27:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:27:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1577277749, now seen corresponding path program 1 times [2021-11-07 22:27:51,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:27:51,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389659908] [2021-11-07 22:27:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:27:51,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:27:51,789 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:27:51,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48989683] [2021-11-07 22:27:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:27:51,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:27:51,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:27:51,801 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 22:27:51,806 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 22:31:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:31:48,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 22:31:48,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:31:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 22:31:48,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:31:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 325 proven. 1 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2021-11-07 22:31:49,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:31:49,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389659908] [2021-11-07 22:31:49,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:31:49,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48989683] [2021-11-07 22:31:49,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48989683] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:31:49,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:31:49,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2021-11-07 22:31:49,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896132722] [2021-11-07 22:31:49,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:31:49,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 22:31:49,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:31:49,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 22:31:49,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 22:31:49,826 INFO L87 Difference]: Start difference. First operand 996 states and 1206 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:31:49,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:31:49,958 INFO L93 Difference]: Finished difference Result 3675 states and 4493 transitions. [2021-11-07 22:31:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 22:31:49,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 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 527 [2021-11-07 22:31:49,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:31:49,968 INFO L225 Difference]: With dead ends: 3675 [2021-11-07 22:31:49,969 INFO L226 Difference]: Without dead ends: 2730 [2021-11-07 22:31:49,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 55.94ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-07 22:31:49,971 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 302 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.75ms IncrementalHoareTripleChecker+Time [2021-11-07 22:31:49,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 1844 Invalid, 74 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 54.75ms Time] [2021-11-07 22:31:49,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-07 22:31:50,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 1036. [2021-11-07 22:31:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1026 states have (on average 1.2144249512670566) internal successors, (1246), 1035 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:31:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1246 transitions. [2021-11-07 22:31:50,010 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1246 transitions. Word has length 527 [2021-11-07 22:31:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:31:50,010 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1246 transitions. [2021-11-07 22:31:50,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:31:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1246 transitions. [2021-11-07 22:31:50,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2021-11-07 22:31:50,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:31:50,020 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, 9, 9, 9, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:31:50,192 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 22:31:50,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 22:31:50,236 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:31:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:31:50,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1316590250, now seen corresponding path program 2 times [2021-11-07 22:31:50,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:31:50,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986095301] [2021-11-07 22:31:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:31:50,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:31:50,265 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:31:50,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039455635] [2021-11-07 22:31:50,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:31:50,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:31:50,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:31:50,267 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 22:31:50,268 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 22:32:06,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:32:06,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:32:06,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 22:32:06,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:32:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 325 proven. 13 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-07 22:32:07,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:32:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 325 proven. 10 refuted. 0 times theorem prover too weak. 1965 trivial. 0 not checked. [2021-11-07 22:32:08,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:32:08,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986095301] [2021-11-07 22:32:08,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:32:08,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039455635] [2021-11-07 22:32:08,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039455635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:32:08,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:32:08,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2021-11-07 22:32:08,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53914695] [2021-11-07 22:32:08,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:32:08,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 22:32:08,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:32:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 22:32:08,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-07 22:32:08,178 INFO L87 Difference]: Start difference. First operand 1036 states and 1246 transitions. Second operand has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:32:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:32:09,345 INFO L93 Difference]: Finished difference Result 2984 states and 3716 transitions. [2021-11-07 22:32:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 22:32:09,346 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 0 states have call successors, (0), 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 531 [2021-11-07 22:32:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:32:09,352 INFO L225 Difference]: With dead ends: 2984 [2021-11-07 22:32:09,353 INFO L226 Difference]: Without dead ends: 1956 [2021-11-07 22:32:09,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1052 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 815.68ms TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2021-11-07 22:32:09,356 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 809 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 346.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.17ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 414.86ms IncrementalHoareTripleChecker+Time [2021-11-07 22:32:09,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2470 Invalid, 573 Unknown, 0 Unchecked, 8.17ms Time], IncrementalHoareTripleChecker [74 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 414.86ms Time] [2021-11-07 22:32:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-11-07 22:32:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1146. [2021-11-07 22:32:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1136 states have (on average 1.193661971830986) internal successors, (1356), 1145 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:32:09,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1356 transitions. [2021-11-07 22:32:09,401 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1356 transitions. Word has length 531 [2021-11-07 22:32:09,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:32:09,401 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1356 transitions. [2021-11-07 22:32:09,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:32:09,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1356 transitions. [2021-11-07 22:32:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2021-11-07 22:32:09,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:32:09,406 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, 9, 9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:32:09,482 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 22:32:09,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:32:09,620 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 22:32:09,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:32:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2034509196, now seen corresponding path program 3 times [2021-11-07 22:32:09,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:32:09,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791445893] [2021-11-07 22:32:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:32:09,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:32:09,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:32:09,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797309288] [2021-11-07 22:32:09,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 22:32:09,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:32:09,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:32:09,661 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 22:32:09,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process Killed by 15