./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_test10-1.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 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-06 01:39:51,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 01:39:51,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 01:39:51,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 01:39:51,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 01:39:51,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 01:39:51,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 01:39:51,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 01:39:51,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 01:39:51,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 01:39:51,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 01:39:51,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 01:39:51,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 01:39:51,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 01:39:51,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 01:39:51,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 01:39:51,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 01:39:51,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 01:39:51,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 01:39:51,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 01:39:51,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 01:39:51,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 01:39:51,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 01:39:51,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 01:39:51,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 01:39:51,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 01:39:51,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 01:39:51,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 01:39:51,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 01:39:51,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 01:39:51,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 01:39:51,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 01:39:51,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 01:39:51,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 01:39:51,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 01:39:51,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 01:39:51,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 01:39:51,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 01:39:51,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 01:39:51,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 01:39:51,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 01:39:51,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 01:39:51,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 01:39:51,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 01:39:51,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 01:39:51,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 01:39:51,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 01:39:51,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 01:39:51,375 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 01:39:51,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 01:39:51,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 01:39:51,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 01:39:51,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 01:39:51,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 01:39:51,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 01:39:51,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 01:39:51,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 01:39:51,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 01:39:51,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 01:39:51,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 01:39:51,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 01:39:51,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 01:39:51,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 01:39:51,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 01:39:51,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 01:39:51,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 01:39:51,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 01:39:51,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 01:39:51,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 01:39:51,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 01:39:51,379 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 01:39:51,379 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 01:39:51,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 01:39:51,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 01:39:51,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2021-11-06 01:39:51,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 01:39:51,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 01:39:51,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 01:39:51,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 01:39:51,685 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 01:39:51,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2021-11-06 01:39:51,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d12fc19c/3fbf355e1e974ada9b89e3dda5dd4892/FLAG88e21d179 [2021-11-06 01:39:52,172 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 01:39:52,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2021-11-06 01:39:52,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d12fc19c/3fbf355e1e974ada9b89e3dda5dd4892/FLAG88e21d179 [2021-11-06 01:39:52,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d12fc19c/3fbf355e1e974ada9b89e3dda5dd4892 [2021-11-06 01:39:52,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 01:39:52,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 01:39:52,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 01:39:52,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 01:39:52,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 01:39:52,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:52,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9fa50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52, skipping insertion in model container [2021-11-06 01:39:52,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:52,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 01:39:52,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 01:39:52,603 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_test10-1.i[33022,33035] [2021-11-06 01:39:52,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 01:39:52,754 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 01:39:52,770 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_test10-1.i[33022,33035] [2021-11-06 01:39:52,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 01:39:52,912 INFO L208 MainTranslator]: Completed translation [2021-11-06 01:39:52,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52 WrapperNode [2021-11-06 01:39:52,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 01:39:52,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 01:39:52,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 01:39:52,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 01:39:52,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:52,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:53,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 01:39:53,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 01:39:53,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 01:39:53,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 01:39:53,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:53,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:53,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:53,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:53,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:53,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:53,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:53,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 01:39:53,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 01:39:53,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 01:39:53,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 01:39:53,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (1/1) ... [2021-11-06 01:39:53,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 01:39:53,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:39:53,128 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) [2021-11-06 01:39:53,134 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 [2021-11-06 01:39:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 01:39:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 01:39:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 01:39:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 01:39:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 01:39:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 01:39:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 01:39:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 01:39:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 01:39:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 01:39:53,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 01:39:54,561 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 01:39:54,562 INFO L299 CfgBuilder]: Removed 207 assume(true) statements. [2021-11-06 01:39:54,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:39:54 BoogieIcfgContainer [2021-11-06 01:39:54,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 01:39:54,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 01:39:54,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 01:39:54,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 01:39:54,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 01:39:52" (1/3) ... [2021-11-06 01:39:54,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60060657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:39:54, skipping insertion in model container [2021-11-06 01:39:54,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:52" (2/3) ... [2021-11-06 01:39:54,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60060657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:39:54, skipping insertion in model container [2021-11-06 01:39:54,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:39:54" (3/3) ... [2021-11-06 01:39:54,569 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-1.i [2021-11-06 01:39:54,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 01:39:54,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-06 01:39:54,601 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 01:39:54,606 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 [2021-11-06 01:39:54,607 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-06 01:39:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 453 states have (on average 1.7461368653421634) internal successors, (791), 469 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:54,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-06 01:39:54,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:39:54,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:39:54,625 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:39:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:39:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-06 01:39:54,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:39:54,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003703978] [2021-11-06 01:39:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:54,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:39:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:39:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:39:54,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:39:54,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003703978] [2021-11-06 01:39:54,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003703978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:39:54,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:39:54,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 01:39:54,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522067006] [2021-11-06 01:39:54,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:39:54,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 01:39:54,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:39:54,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 01:39:54,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 01:39:54,805 INFO L87 Difference]: Start difference. First operand has 470 states, 453 states have (on average 1.7461368653421634) internal successors, (791), 469 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:39:54,865 INFO L93 Difference]: Finished difference Result 938 states and 1580 transitions. [2021-11-06 01:39:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 01:39:54,867 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-06 01:39:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:39:54,881 INFO L225 Difference]: With dead ends: 938 [2021-11-06 01:39:54,882 INFO L226 Difference]: Without dead ends: 465 [2021-11-06 01:39:54,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 01:39:54,891 INFO L933 BasicCegarLoop]: 617 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, 617 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-06 01:39:54,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 5.74ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-06 01:39:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-06 01:39:54,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-06 01:39:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-06 01:39:54,938 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-06 01:39:54,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:39:54,943 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-06 01:39:54,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-06 01:39:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 01:39:54,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:39:54,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:39:54,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 01:39:54,946 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:39:54,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:39:54,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-06 01:39:54,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:39:54,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259691935] [2021-11-06 01:39:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:54,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:39:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:39:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:39:54,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:39:54,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259691935] [2021-11-06 01:39:54,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259691935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:39:54,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:39:54,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:39:54,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364359851] [2021-11-06 01:39:55,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:39:55,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:39:55,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:39:55,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:39:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:39:55,002 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:39:55,442 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2021-11-06 01:39:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:39:55,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 01:39:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:39:55,444 INFO L225 Difference]: With dead ends: 831 [2021-11-06 01:39:55,444 INFO L226 Difference]: Without dead ends: 540 [2021-11-06 01:39:55,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:39:55,445 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 96 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 358.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 408.66ms IncrementalHoareTripleChecker+Time [2021-11-06 01:39:55,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1603 Invalid, 222 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 408.66ms Time] [2021-11-06 01:39:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-06 01:39:55,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2021-11-06 01:39:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.352549889135255) internal successors, (610), 466 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2021-11-06 01:39:55,460 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2021-11-06 01:39:55,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:39:55,460 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2021-11-06 01:39:55,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2021-11-06 01:39:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 01:39:55,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:39:55,463 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:39:55,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 01:39:55,463 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:39:55,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:39:55,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-06 01:39:55,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:39:55,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117655283] [2021-11-06 01:39:55,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:55,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:39:55,489 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:39:55,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762462342] [2021-11-06 01:39:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:55,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:39:55,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:39:55,492 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) [2021-11-06 01:39:55,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 01:39:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:39:55,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:39:55,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:39:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:39:55,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:39:55,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:39:55,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117655283] [2021-11-06 01:39:55,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:39:55,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762462342] [2021-11-06 01:39:55,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762462342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:39:55,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:39:55,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:39:55,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023997164] [2021-11-06 01:39:55,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:39:55,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:39:55,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:39:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:39:55,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:39:55,894 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:39:55,946 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2021-11-06 01:39:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:39:55,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-06 01:39:55,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:39:55,948 INFO L225 Difference]: With dead ends: 951 [2021-11-06 01:39:55,948 INFO L226 Difference]: Without dead ends: 488 [2021-11-06 01:39:55,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:39:55,950 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.71ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.23ms IncrementalHoareTripleChecker+Time [2021-11-06 01:39:55,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1161 Invalid, 72 Unknown, 0 Unchecked, 1.71ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 42.23ms Time] [2021-11-06 01:39:55,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-06 01:39:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-11-06 01:39:55,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 471 states have (on average 1.3375796178343948) internal successors, (630), 486 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2021-11-06 01:39:55,976 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2021-11-06 01:39:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:39:55,976 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2021-11-06 01:39:55,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:55,976 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2021-11-06 01:39:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 01:39:55,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:39:55,987 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:39:56,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 01:39:56,205 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 [2021-11-06 01:39:56,205 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:39:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:39:56,206 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-06 01:39:56,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:39:56,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627281081] [2021-11-06 01:39:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:56,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:39:56,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:39:56,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872253592] [2021-11-06 01:39:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:56,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:39:56,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:39:56,238 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) [2021-11-06 01:39:56,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 01:39:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:39:56,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:39:56,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:39:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 01:39:56,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:39:56,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:39:56,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627281081] [2021-11-06 01:39:56,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:39:56,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872253592] [2021-11-06 01:39:56,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872253592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:39:56,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:39:56,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:39:56,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373878156] [2021-11-06 01:39:56,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:39:56,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:39:56,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:39:56,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:39:56,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:39:56,575 INFO L87 Difference]: Start difference. First operand 487 states and 630 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:56,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:39:56,619 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2021-11-06 01:39:56,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:39:56,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 01:39:56,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:39:56,621 INFO L225 Difference]: With dead ends: 787 [2021-11-06 01:39:56,621 INFO L226 Difference]: Without dead ends: 508 [2021-11-06 01:39:56,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:39:56,623 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.69ms IncrementalHoareTripleChecker+Time [2021-11-06 01:39:56,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1161 Invalid, 72 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 36.69ms Time] [2021-11-06 01:39:56,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-06 01:39:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2021-11-06 01:39:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 491 states have (on average 1.3238289205702647) internal successors, (650), 506 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2021-11-06 01:39:56,630 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2021-11-06 01:39:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:39:56,631 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2021-11-06 01:39:56,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:56,631 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2021-11-06 01:39:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 01:39:56,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:39:56,633 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:39:56,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 01:39:56,850 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 [2021-11-06 01:39:56,851 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:39:56,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:39:56,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-06 01:39:56,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:39:56,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460099061] [2021-11-06 01:39:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:56,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:39:56,865 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:39:56,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008206101] [2021-11-06 01:39:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:56,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:39:56,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:39:56,872 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) [2021-11-06 01:39:56,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 01:39:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:39:57,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:39:57,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:39:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:39:57,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:39:57,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:39:57,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460099061] [2021-11-06 01:39:57,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:39:57,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008206101] [2021-11-06 01:39:57,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008206101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:39:57,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:39:57,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:39:57,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195110392] [2021-11-06 01:39:57,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:39:57,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:39:57,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:39:57,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:39:57,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:39:57,205 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:39:57,258 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2021-11-06 01:39:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:39:57,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-06 01:39:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:39:57,260 INFO L225 Difference]: With dead ends: 1086 [2021-11-06 01:39:57,261 INFO L226 Difference]: Without dead ends: 583 [2021-11-06 01:39:57,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:39:57,262 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 596 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.63ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.62ms IncrementalHoareTripleChecker+Time [2021-11-06 01:39:57,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 1508 Invalid, 66 Unknown, 0 Unchecked, 2.63ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 36.62ms Time] [2021-11-06 01:39:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-06 01:39:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2021-11-06 01:39:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 477 states have (on average 1.3186582809224319) internal successors, (629), 492 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2021-11-06 01:39:57,271 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2021-11-06 01:39:57,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:39:57,272 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2021-11-06 01:39:57,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:57,272 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2021-11-06 01:39:57,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 01:39:57,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:39:57,273 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:39:57,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 01:39:57,491 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 [2021-11-06 01:39:57,492 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:39:57,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:39:57,492 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-06 01:39:57,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:39:57,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982979759] [2021-11-06 01:39:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:57,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:39:57,508 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:39:57,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720130191] [2021-11-06 01:39:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:57,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:39:57,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:39:57,527 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) [2021-11-06 01:39:57,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 01:39:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:39:57,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:39:57,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:39:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 01:39:57,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:39:57,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:39:57,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982979759] [2021-11-06 01:39:57,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:39:57,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720130191] [2021-11-06 01:39:57,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720130191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:39:57,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:39:57,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:39:57,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520726692] [2021-11-06 01:39:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:39:57,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:39:57,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:39:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:39:57,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:39:57,801 INFO L87 Difference]: Start difference. First operand 493 states and 629 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:39:57,857 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2021-11-06 01:39:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:39:57,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 01:39:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:39:57,859 INFO L225 Difference]: With dead ends: 761 [2021-11-06 01:39:57,859 INFO L226 Difference]: Without dead ends: 480 [2021-11-06 01:39:57,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.80ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:39:57,861 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 365 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.73ms IncrementalHoareTripleChecker+Time [2021-11-06 01:39:57,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 1362 Invalid, 66 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 41.73ms Time] [2021-11-06 01:39:57,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-06 01:39:57,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-11-06 01:39:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.3131749460043196) internal successors, (608), 478 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2021-11-06 01:39:57,869 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2021-11-06 01:39:57,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:39:57,869 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2021-11-06 01:39:57,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:57,869 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2021-11-06 01:39:57,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 01:39:57,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:39:57,870 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:39:57,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 01:39:58,083 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 [2021-11-06 01:39:58,084 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:39:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:39:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-06 01:39:58,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:39:58,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558235186] [2021-11-06 01:39:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:58,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:39:58,096 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:39:58,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125545108] [2021-11-06 01:39:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:58,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:39:58,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:39:58,098 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) [2021-11-06 01:39:58,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 01:39:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:39:58,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 01:39:58,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:39:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:39:58,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:39:58,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:39:58,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558235186] [2021-11-06 01:39:58,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:39:58,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125545108] [2021-11-06 01:39:58,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125545108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:39:58,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:39:58,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:39:58,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164327722] [2021-11-06 01:39:58,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:39:58,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:39:58,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:39:58,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:39:58,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:39:58,482 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:58,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:39:58,530 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2021-11-06 01:39:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:39:58,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-06 01:39:58,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:39:58,533 INFO L225 Difference]: With dead ends: 1231 [2021-11-06 01:39:58,533 INFO L226 Difference]: Without dead ends: 756 [2021-11-06 01:39:58,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:39:58,535 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 317 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.46ms IncrementalHoareTripleChecker+Time [2021-11-06 01:39:58,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1159 Invalid, 19 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 33.46ms Time] [2021-11-06 01:39:58,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-06 01:39:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2021-11-06 01:39:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 705 states have (on average 1.3191489361702127) internal successors, (930), 720 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2021-11-06 01:39:58,546 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2021-11-06 01:39:58,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:39:58,547 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2021-11-06 01:39:58,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2021-11-06 01:39:58,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 01:39:58,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:39:58,548 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:39:58,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 01:39:58,780 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 [2021-11-06 01:39:58,780 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:39:58,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:39:58,781 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-06 01:39:58,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:39:58,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549693478] [2021-11-06 01:39:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:58,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:39:58,792 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:39:58,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720937252] [2021-11-06 01:39:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:58,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:39:58,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:39:58,794 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) [2021-11-06 01:39:58,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 01:39:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:39:58,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 01:39:58,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:39:59,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 01:39:59,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-06 01:39:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:39:59,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:39:59,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:39:59,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549693478] [2021-11-06 01:39:59,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:39:59,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720937252] [2021-11-06 01:39:59,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720937252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:39:59,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:39:59,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 01:39:59,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154020176] [2021-11-06 01:39:59,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:39:59,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 01:39:59,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:39:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 01:39:59,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:39:59,165 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 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) [2021-11-06 01:39:59,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:39:59,664 INFO L93 Difference]: Finished difference Result 1354 states and 1745 transitions. [2021-11-06 01:39:59,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 01:39:59,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 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 104 [2021-11-06 01:39:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:39:59,666 INFO L225 Difference]: With dead ends: 1354 [2021-11-06 01:39:59,666 INFO L226 Difference]: Without dead ends: 723 [2021-11-06 01:39:59,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.01ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 01:39:59,667 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 98 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 391.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 463.78ms IncrementalHoareTripleChecker+Time [2021-11-06 01:39:59,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 2015 Invalid, 372 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [12 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 463.78ms Time] [2021-11-06 01:39:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-06 01:39:59,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 721. [2021-11-06 01:39:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 705 states have (on average 1.3177304964539007) internal successors, (929), 720 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:39:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 929 transitions. [2021-11-06 01:39:59,678 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 929 transitions. Word has length 104 [2021-11-06 01:39:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:39:59,678 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 929 transitions. [2021-11-06 01:39:59,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 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) [2021-11-06 01:39:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 929 transitions. [2021-11-06 01:39:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 01:39:59,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:39:59,680 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:39:59,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 01:39:59,898 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 [2021-11-06 01:39:59,898 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:39:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:39:59,899 INFO L85 PathProgramCache]: Analyzing trace with hash -560944154, now seen corresponding path program 1 times [2021-11-06 01:39:59,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:39:59,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879444205] [2021-11-06 01:39:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:59,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:39:59,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:39:59,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858948174] [2021-11-06 01:39:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:39:59,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:39:59,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:39:59,912 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) [2021-11-06 01:39:59,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 01:40:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:40:00,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:40:00,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:40:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:40:00,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:40:00,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:40:00,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879444205] [2021-11-06 01:40:00,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:40:00,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858948174] [2021-11-06 01:40:00,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858948174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:40:00,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:40:00,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:40:00,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022154684] [2021-11-06 01:40:00,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:40:00,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:40:00,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:40:00,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:40:00,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:40:00,301 INFO L87 Difference]: Start difference. First operand 721 states and 929 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:00,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:40:00,348 INFO L93 Difference]: Finished difference Result 1466 states and 1899 transitions. [2021-11-06 01:40:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:40:00,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-06 01:40:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:40:00,351 INFO L225 Difference]: With dead ends: 1466 [2021-11-06 01:40:00,351 INFO L226 Difference]: Without dead ends: 763 [2021-11-06 01:40:00,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:40:00,352 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 9 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.07ms IncrementalHoareTripleChecker+Time [2021-11-06 01:40:00,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1133 Invalid, 72 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 35.07ms Time] [2021-11-06 01:40:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-11-06 01:40:00,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 761. [2021-11-06 01:40:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 745 states have (on average 1.3006711409395972) internal successors, (969), 760 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:00,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 969 transitions. [2021-11-06 01:40:00,365 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 969 transitions. Word has length 151 [2021-11-06 01:40:00,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:40:00,366 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 969 transitions. [2021-11-06 01:40:00,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 969 transitions. [2021-11-06 01:40:00,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 01:40:00,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:40:00,368 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:40:00,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-06 01:40:00,599 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 [2021-11-06 01:40:00,600 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:40:00,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:40:00,600 INFO L85 PathProgramCache]: Analyzing trace with hash 145652452, now seen corresponding path program 1 times [2021-11-06 01:40:00,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:40:00,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793830564] [2021-11-06 01:40:00,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:00,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:40:00,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:40:00,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039245852] [2021-11-06 01:40:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:00,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:00,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:40:00,621 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) [2021-11-06 01:40:00,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 01:40:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:40:00,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:40:00,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:40:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:40:00,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:40:00,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:40:00,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793830564] [2021-11-06 01:40:00,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:40:00,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039245852] [2021-11-06 01:40:00,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039245852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:40:00,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:40:00,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:40:00,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881942306] [2021-11-06 01:40:00,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:40:00,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:40:00,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:40:00,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:40:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:40:00,988 INFO L87 Difference]: Start difference. First operand 761 states and 969 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:01,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:40:01,035 INFO L93 Difference]: Finished difference Result 1460 states and 1864 transitions. [2021-11-06 01:40:01,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:40:01,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-06 01:40:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:40:01,037 INFO L225 Difference]: With dead ends: 1460 [2021-11-06 01:40:01,037 INFO L226 Difference]: Without dead ends: 735 [2021-11-06 01:40:01,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:40:01,039 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 582 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.23ms IncrementalHoareTripleChecker+Time [2021-11-06 01:40:01,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 1147 Invalid, 65 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [25 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 32.23ms Time] [2021-11-06 01:40:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-06 01:40:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 733. [2021-11-06 01:40:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 717 states have (on average 1.292887029288703) internal successors, (927), 732 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 927 transitions. [2021-11-06 01:40:01,050 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 927 transitions. Word has length 151 [2021-11-06 01:40:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:40:01,051 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 927 transitions. [2021-11-06 01:40:01,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 927 transitions. [2021-11-06 01:40:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 01:40:01,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:40:01,052 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:40:01,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 01:40:01,270 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 [2021-11-06 01:40:01,271 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:40:01,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:40:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1850791156, now seen corresponding path program 1 times [2021-11-06 01:40:01,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:40:01,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124719439] [2021-11-06 01:40:01,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:01,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:40:01,290 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:40:01,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307115755] [2021-11-06 01:40:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:01,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:01,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:40:01,292 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) [2021-11-06 01:40:01,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 01:40:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:40:01,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 01:40:01,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:40:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:40:01,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:40:01,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:40:01,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124719439] [2021-11-06 01:40:01,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:40:01,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307115755] [2021-11-06 01:40:01,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307115755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:40:01,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:40:01,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 01:40:01,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444867403] [2021-11-06 01:40:01,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:40:01,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 01:40:01,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:40:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 01:40:01,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:40:01,679 INFO L87 Difference]: Start difference. First operand 733 states and 927 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:40:01,760 INFO L93 Difference]: Finished difference Result 2155 states and 2732 transitions. [2021-11-06 01:40:01,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 01:40:01,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-06 01:40:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:40:01,764 INFO L225 Difference]: With dead ends: 2155 [2021-11-06 01:40:01,764 INFO L226 Difference]: Without dead ends: 1460 [2021-11-06 01:40:01,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:40:01,766 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 571 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.10ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.60ms IncrementalHoareTripleChecker+Time [2021-11-06 01:40:01,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 2268 Invalid, 104 Unknown, 0 Unchecked, 2.10ms Time], IncrementalHoareTripleChecker [27 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 58.60ms Time] [2021-11-06 01:40:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-06 01:40:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 779. [2021-11-06 01:40:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 763 states have (on average 1.2804718217562254) internal successors, (977), 778 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:01,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 977 transitions. [2021-11-06 01:40:01,784 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 977 transitions. Word has length 151 [2021-11-06 01:40:01,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:40:01,785 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 977 transitions. [2021-11-06 01:40:01,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:01,785 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 977 transitions. [2021-11-06 01:40:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 01:40:01,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:40:01,786 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:40:01,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 01:40:02,005 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 [2021-11-06 01:40:02,006 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:40:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:40:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1918499578, now seen corresponding path program 1 times [2021-11-06 01:40:02,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:40:02,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038933579] [2021-11-06 01:40:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:02,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:40:02,021 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:40:02,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416132819] [2021-11-06 01:40:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:02,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:02,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:40:02,025 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) [2021-11-06 01:40:02,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 01:40:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:40:02,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 01:40:02,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:40:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:40:02,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:40:02,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:40:02,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038933579] [2021-11-06 01:40:02,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:40:02,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416132819] [2021-11-06 01:40:02,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416132819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:40:02,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:40:02,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:40:02,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147796890] [2021-11-06 01:40:02,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:40:02,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:40:02,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:40:02,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:40:02,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:40:02,403 INFO L87 Difference]: Start difference. First operand 779 states and 977 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:40:02,436 INFO L93 Difference]: Finished difference Result 1467 states and 1851 transitions. [2021-11-06 01:40:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:40:02,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-06 01:40:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:40:02,438 INFO L225 Difference]: With dead ends: 1467 [2021-11-06 01:40:02,438 INFO L226 Difference]: Without dead ends: 715 [2021-11-06 01:40:02,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:40:02,440 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 562 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.35ms IncrementalHoareTripleChecker+Time [2021-11-06 01:40:02,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 1141 Invalid, 41 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 18.35ms Time] [2021-11-06 01:40:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-11-06 01:40:02,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2021-11-06 01:40:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 699 states have (on average 1.2861230329041489) internal successors, (899), 714 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 899 transitions. [2021-11-06 01:40:02,452 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 899 transitions. Word has length 151 [2021-11-06 01:40:02,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:40:02,452 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 899 transitions. [2021-11-06 01:40:02,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 899 transitions. [2021-11-06 01:40:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 01:40:02,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:40:02,454 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:40:02,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-06 01:40:02,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 01:40:02,672 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:40:02,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:40:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1737579534, now seen corresponding path program 1 times [2021-11-06 01:40:02,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:40:02,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423283679] [2021-11-06 01:40:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:02,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:40:02,682 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:40:02,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442060022] [2021-11-06 01:40:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:02,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:02,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:40:02,699 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:40:02,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 01:40:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:40:02,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 01:40:02,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:40:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:40:03,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:40:03,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:40:03,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423283679] [2021-11-06 01:40:03,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:40:03,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442060022] [2021-11-06 01:40:03,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442060022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:40:03,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:40:03,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:40:03,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187417235] [2021-11-06 01:40:03,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:40:03,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:40:03,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:40:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:40:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:40:03,090 INFO L87 Difference]: Start difference. First operand 715 states and 899 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:03,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:40:03,136 INFO L93 Difference]: Finished difference Result 1699 states and 2167 transitions. [2021-11-06 01:40:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:40:03,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-11-06 01:40:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:40:03,139 INFO L225 Difference]: With dead ends: 1699 [2021-11-06 01:40:03,139 INFO L226 Difference]: Without dead ends: 1033 [2021-11-06 01:40:03,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:40:03,140 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 294 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.88ms IncrementalHoareTripleChecker+Time [2021-11-06 01:40:03,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1129 Invalid, 19 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 29.88ms Time] [2021-11-06 01:40:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-11-06 01:40:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 876. [2021-11-06 01:40:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 860 states have (on average 1.3093023255813954) internal successors, (1126), 875 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1126 transitions. [2021-11-06 01:40:03,167 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1126 transitions. Word has length 151 [2021-11-06 01:40:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:40:03,167 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1126 transitions. [2021-11-06 01:40:03,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1126 transitions. [2021-11-06 01:40:03,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-06 01:40:03,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:40:03,169 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:40:03,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 01:40:03,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 01:40:03,384 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:40:03,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:40:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1603750718, now seen corresponding path program 1 times [2021-11-06 01:40:03,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:40:03,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353244970] [2021-11-06 01:40:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:03,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:40:03,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:40:03,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930803649] [2021-11-06 01:40:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:03,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:03,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:40:03,406 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:40:03,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 01:40:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:40:03,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 01:40:03,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:40:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:40:03,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:40:03,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:40:03,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353244970] [2021-11-06 01:40:03,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:40:03,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930803649] [2021-11-06 01:40:03,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930803649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:40:03,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:40:03,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:40:03,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425393874] [2021-11-06 01:40:03,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:40:03,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:40:03,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:40:03,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:40:03,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:40:03,873 INFO L87 Difference]: Start difference. First operand 876 states and 1126 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:04,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:40:04,358 INFO L93 Difference]: Finished difference Result 1453 states and 1865 transitions. [2021-11-06 01:40:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:40:04,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2021-11-06 01:40:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:40:04,361 INFO L225 Difference]: With dead ends: 1453 [2021-11-06 01:40:04,361 INFO L226 Difference]: Without dead ends: 704 [2021-11-06 01:40:04,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:40:04,362 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 991 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 440.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 465.88ms IncrementalHoareTripleChecker+Time [2021-11-06 01:40:04,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 589 Invalid, 80 Unknown, 0 Unchecked, 1.73ms Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 465.88ms Time] [2021-11-06 01:40:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-06 01:40:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2021-11-06 01:40:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 688 states have (on average 1.2805232558139534) internal successors, (881), 703 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 881 transitions. [2021-11-06 01:40:04,389 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 881 transitions. Word has length 158 [2021-11-06 01:40:04,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:40:04,389 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 881 transitions. [2021-11-06 01:40:04,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:04,390 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 881 transitions. [2021-11-06 01:40:04,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 01:40:04,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:40:04,391 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:40:04,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-06 01:40:04,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 01:40:04,627 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:40:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:40:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash -881822645, now seen corresponding path program 1 times [2021-11-06 01:40:04,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:40:04,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504392994] [2021-11-06 01:40:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:04,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:40:04,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:40:04,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107699094] [2021-11-06 01:40:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:04,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:04,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:40:04,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:40:04,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 01:40:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:40:05,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 01:40:05,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:40:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:40:05,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:40:05,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:40:05,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504392994] [2021-11-06 01:40:05,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:40:05,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107699094] [2021-11-06 01:40:05,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107699094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:40:05,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:40:05,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:40:05,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531307180] [2021-11-06 01:40:05,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:40:05,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:40:05,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:40:05,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:40:05,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:40:05,240 INFO L87 Difference]: Start difference. First operand 704 states and 881 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:40:05,274 INFO L93 Difference]: Finished difference Result 1364 states and 1718 transitions. [2021-11-06 01:40:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:40:05,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2021-11-06 01:40:05,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:40:05,277 INFO L225 Difference]: With dead ends: 1364 [2021-11-06 01:40:05,277 INFO L226 Difference]: Without dead ends: 706 [2021-11-06 01:40:05,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:40:05,279 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 0 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.27ms IncrementalHoareTripleChecker+Time [2021-11-06 01:40:05,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1134 Invalid, 20 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 19.27ms Time] [2021-11-06 01:40:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-06 01:40:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-11-06 01:40:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 690 states have (on average 1.2797101449275363) internal successors, (883), 705 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 883 transitions. [2021-11-06 01:40:05,292 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 883 transitions. Word has length 165 [2021-11-06 01:40:05,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:40:05,292 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 883 transitions. [2021-11-06 01:40:05,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:05,292 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 883 transitions. [2021-11-06 01:40:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 01:40:05,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:40:05,293 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:40:05,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-06 01:40:05,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 01:40:05,500 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:40:05,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:40:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1687246210, now seen corresponding path program 1 times [2021-11-06 01:40:05,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:40:05,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314353838] [2021-11-06 01:40:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:05,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:40:05,511 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:40:05,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707853684] [2021-11-06 01:40:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:05,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:05,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:40:05,512 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:40:05,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 01:40:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:40:06,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 01:40:06,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:40:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 01:40:06,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 01:40:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 01:40:06,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:40:06,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314353838] [2021-11-06 01:40:06,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:40:06,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707853684] [2021-11-06 01:40:06,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707853684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 01:40:06,767 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 01:40:06,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-06 01:40:06,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364261746] [2021-11-06 01:40:06,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 01:40:06,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 01:40:06,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:40:06,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 01:40:06,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 01:40:06,768 INFO L87 Difference]: Start difference. First operand 706 states and 883 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:40:06,848 INFO L93 Difference]: Finished difference Result 1379 states and 1742 transitions. [2021-11-06 01:40:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 01:40:06,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 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 167 [2021-11-06 01:40:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:40:06,850 INFO L225 Difference]: With dead ends: 1379 [2021-11-06 01:40:06,850 INFO L226 Difference]: Without dead ends: 716 [2021-11-06 01:40:06,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.94ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-06 01:40:06,851 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 0 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.31ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.02ms IncrementalHoareTripleChecker+Time [2021-11-06 01:40:06,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1691 Invalid, 69 Unknown, 0 Unchecked, 1.31ms Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 56.02ms Time] [2021-11-06 01:40:06,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-06 01:40:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-11-06 01:40:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 700 states have (on average 1.2757142857142858) internal successors, (893), 715 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 893 transitions. [2021-11-06 01:40:06,865 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 893 transitions. Word has length 167 [2021-11-06 01:40:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:40:06,865 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 893 transitions. [2021-11-06 01:40:06,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 893 transitions. [2021-11-06 01:40:06,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-06 01:40:06,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:40:06,867 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:40:06,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-06 01:40:07,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:07,090 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:40:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:40:07,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1200882837, now seen corresponding path program 1 times [2021-11-06 01:40:07,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:40:07,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080350308] [2021-11-06 01:40:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:07,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:40:07,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:40:07,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78621654] [2021-11-06 01:40:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:07,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:07,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:40:07,114 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:40:07,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-06 01:40:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:40:07,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-06 01:40:07,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:40:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 01:40:08,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 01:40:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 01:40:08,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:40:08,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080350308] [2021-11-06 01:40:08,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:40:08,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78621654] [2021-11-06 01:40:08,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78621654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 01:40:08,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 01:40:08,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-11-06 01:40:08,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055738130] [2021-11-06 01:40:08,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 01:40:08,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 01:40:08,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:40:08,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 01:40:08,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-06 01:40:08,346 INFO L87 Difference]: Start difference. First operand 716 states and 893 transitions. Second operand has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:40:09,120 INFO L93 Difference]: Finished difference Result 1405 states and 1776 transitions. [2021-11-06 01:40:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 01:40:09,128 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 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 177 [2021-11-06 01:40:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:40:09,130 INFO L225 Difference]: With dead ends: 1405 [2021-11-06 01:40:09,130 INFO L226 Difference]: Without dead ends: 734 [2021-11-06 01:40:09,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 347.28ms TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2021-11-06 01:40:09,132 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 574 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 422.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.55ms SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 460.87ms IncrementalHoareTripleChecker+Time [2021-11-06 01:40:09,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 3352 Invalid, 331 Unknown, 0 Unchecked, 4.55ms Time], IncrementalHoareTripleChecker [116 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 460.87ms Time] [2021-11-06 01:40:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-11-06 01:40:09,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2021-11-06 01:40:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 718 states have (on average 1.2688022284122562) internal successors, (911), 733 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 911 transitions. [2021-11-06 01:40:09,149 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 911 transitions. Word has length 177 [2021-11-06 01:40:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:40:09,149 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 911 transitions. [2021-11-06 01:40:09,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:09,150 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 911 transitions. [2021-11-06 01:40:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-06 01:40:09,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:40:09,151 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:40:09,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-06 01:40:09,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-06 01:40:09,372 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:40:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:40:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1993521346, now seen corresponding path program 2 times [2021-11-06 01:40:09,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:40:09,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986513971] [2021-11-06 01:40:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:09,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:40:09,390 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:40:09,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571717233] [2021-11-06 01:40:09,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 01:40:09,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:09,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:40:09,397 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:40:09,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-06 01:40:10,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 01:40:10,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 01:40:10,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-06 01:40:10,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:40:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-06 01:40:10,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 01:40:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-06 01:40:11,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:40:11,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986513971] [2021-11-06 01:40:11,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:40:11,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571717233] [2021-11-06 01:40:11,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571717233] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 01:40:11,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 01:40:11,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-06 01:40:11,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168231034] [2021-11-06 01:40:11,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 01:40:11,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 01:40:11,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:40:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 01:40:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-06 01:40:11,294 INFO L87 Difference]: Start difference. First operand 734 states and 911 transitions. Second operand has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:14,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:40:14,175 INFO L93 Difference]: Finished difference Result 2087 states and 2639 transitions. [2021-11-06 01:40:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 01:40:14,177 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 0 states have call successors, (0), 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 195 [2021-11-06 01:40:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:40:14,185 INFO L225 Difference]: With dead ends: 2087 [2021-11-06 01:40:14,185 INFO L226 Difference]: Without dead ends: 1401 [2021-11-06 01:40:14,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1434.52ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-11-06 01:40:14,202 INFO L933 BasicCegarLoop]: 1098 mSDtfsCounter, 2811 mSDsluCounter, 6765 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1416.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2811 SdHoareTripleChecker+Valid, 7863 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.77ms SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1506.37ms IncrementalHoareTripleChecker+Time [2021-11-06 01:40:14,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2811 Valid, 7863 Invalid, 391 Unknown, 0 Unchecked, 5.77ms Time], IncrementalHoareTripleChecker [154 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1506.37ms Time] [2021-11-06 01:40:14,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-11-06 01:40:14,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 766. [2021-11-06 01:40:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 750 states have (on average 1.2613333333333334) internal successors, (946), 765 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 946 transitions. [2021-11-06 01:40:14,226 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 946 transitions. Word has length 195 [2021-11-06 01:40:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:40:14,226 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 946 transitions. [2021-11-06 01:40:14,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:40:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 946 transitions. [2021-11-06 01:40:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-06 01:40:14,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:40:14,228 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:40:14,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-06 01:40:14,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 01:40:14,444 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:40:14,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:40:14,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1010036309, now seen corresponding path program 3 times [2021-11-06 01:40:14,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:40:14,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759434658] [2021-11-06 01:40:14,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:40:14,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:40:14,457 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:40:14,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661071056] [2021-11-06 01:40:14,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 01:40:14,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:40:14,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:40:14,459 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:40:14,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process Killed by 15