./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 fcb8e130 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-dev-fcb8e13 [2021-11-23 06:14:41,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 06:14:41,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 06:14:41,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 06:14:41,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 06:14:41,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 06:14:41,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 06:14:41,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 06:14:41,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 06:14:41,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 06:14:41,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 06:14:41,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 06:14:41,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 06:14:41,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 06:14:41,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 06:14:41,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 06:14:41,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 06:14:41,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 06:14:41,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 06:14:41,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 06:14:41,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 06:14:41,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 06:14:41,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 06:14:41,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 06:14:41,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 06:14:41,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 06:14:41,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 06:14:41,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 06:14:41,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 06:14:41,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 06:14:41,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 06:14:41,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 06:14:41,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 06:14:41,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 06:14:41,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 06:14:41,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 06:14:41,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 06:14:41,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 06:14:41,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 06:14:41,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 06:14:41,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 06:14:41,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 06:14:41,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 06:14:41,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 06:14:41,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 06:14:41,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 06:14:41,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 06:14:41,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 06:14:41,212 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 06:14:41,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 06:14:41,212 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 06:14:41,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 06:14:41,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 06:14:41,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 06:14:41,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 06:14:41,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 06:14:41,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 06:14:41,214 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 06:14:41,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 06:14:41,214 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 06:14:41,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 06:14:41,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 06:14:41,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 06:14:41,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 06:14:41,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 06:14:41,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 06:14:41,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 06:14:41,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 06:14:41,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 06:14:41,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 06:14:41,217 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 06:14:41,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 06:14:41,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 06:14:41,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 06:14:41,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2021-11-23 06:14:41,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 06:14:41,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 06:14:41,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 06:14:41,436 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 06:14:41,439 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 06:14:41,440 INFO L432 ainManager$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 [2021-11-23 06:14:41,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebddbccb0/9d7224a3a9be44eebec8aa37565835cb/FLAG024a25343 [2021-11-23 06:14:42,006 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 06:14:42,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2021-11-23 06:14:42,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebddbccb0/9d7224a3a9be44eebec8aa37565835cb/FLAG024a25343 [2021-11-23 06:14:42,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebddbccb0/9d7224a3a9be44eebec8aa37565835cb [2021-11-23 06:14:42,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 06:14:42,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 06:14:42,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 06:14:42,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 06:14:42,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 06:14:42,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:14:42" (1/1) ... [2021-11-23 06:14:42,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321e8dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:42, skipping insertion in model container [2021-11-23 06:14:42,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:14:42" (1/1) ... [2021-11-23 06:14:42,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 06:14:42,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 06:14:42,690 WARN L230 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] [2021-11-23 06:14:42,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 06:14:42,885 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 06:14:42,909 WARN L230 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] [2021-11-23 06:14:43,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 06:14:43,083 INFO L208 MainTranslator]: Completed translation [2021-11-23 06:14:43,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43 WrapperNode [2021-11-23 06:14:43,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 06:14:43,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 06:14:43,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 06:14:43,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 06:14:43,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (1/1) ... [2021-11-23 06:14:43,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (1/1) ... [2021-11-23 06:14:43,220 INFO L137 Inliner]: procedures = 177, calls = 524, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 2345 [2021-11-23 06:14:43,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 06:14:43,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 06:14:43,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 06:14:43,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 06:14:43,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (1/1) ... [2021-11-23 06:14:43,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (1/1) ... [2021-11-23 06:14:43,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (1/1) ... [2021-11-23 06:14:43,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (1/1) ... [2021-11-23 06:14:43,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (1/1) ... [2021-11-23 06:14:43,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (1/1) ... [2021-11-23 06:14:43,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (1/1) ... [2021-11-23 06:14:43,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 06:14:43,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 06:14:43,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 06:14:43,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 06:14:43,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (1/1) ... [2021-11-23 06:14:43,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 06:14:43,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:43,378 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) [2021-11-23 06:14:43,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 06:14:43,397 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 [2021-11-23 06:14:43,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 06:14:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 06:14:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 06:14:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 06:14:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 06:14:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 06:14:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 06:14:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 06:14:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 06:14:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 06:14:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 06:14:43,635 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 06:14:43,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 06:14:44,723 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 06:14:44,736 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 06:14:44,736 INFO L301 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-23 06:14:44,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:14:44 BoogieIcfgContainer [2021-11-23 06:14:44,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 06:14:44,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 06:14:44,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 06:14:44,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 06:14:44,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:14:42" (1/3) ... [2021-11-23 06:14:44,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d92ad4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:14:44, skipping insertion in model container [2021-11-23 06:14:44,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:14:43" (2/3) ... [2021-11-23 06:14:44,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d92ad4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:14:44, skipping insertion in model container [2021-11-23 06:14:44,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:14:44" (3/3) ... [2021-11-23 06:14:44,755 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-1.i [2021-11-23 06:14:44,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 06:14:44,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-23 06:14:44,807 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 06:14:44,812 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 [2021-11-23 06:14:44,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-23 06:14:44,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 486 states, 469 states have (on average 1.720682302771855) internal successors, (807), 485 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:44,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 06:14:44,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:44,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:14:44,840 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)] === [2021-11-23 06:14:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:44,844 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-23 06:14:44,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:44,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717725986] [2021-11-23 06:14:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:44,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:14:44,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:44,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717725986] [2021-11-23 06:14:44,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717725986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:44,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:44,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 06:14:44,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598069143] [2021-11-23 06:14:44,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:44,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 06:14:44,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:45,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 06:14:45,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 06:14:45,008 INFO L87 Difference]: Start difference. First operand has 486 states, 469 states have (on average 1.720682302771855) internal successors, (807), 485 states have internal predecessors, (807), 0 states have call successors, (0), 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) [2021-11-23 06:14:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:45,059 INFO L93 Difference]: Finished difference Result 970 states and 1612 transitions. [2021-11-23 06:14:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 06:14:45,061 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 [2021-11-23 06:14:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:45,076 INFO L225 Difference]: With dead ends: 970 [2021-11-23 06:14:45,076 INFO L226 Difference]: Without dead ends: 477 [2021-11-23 06:14:45,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 06:14:45,085 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:45,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:14:45,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-23 06:14:45,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2021-11-23 06:14:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 461 states have (on average 1.3449023861171367) internal successors, (620), 476 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:45,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 620 transitions. [2021-11-23 06:14:45,145 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 620 transitions. Word has length 9 [2021-11-23 06:14:45,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:45,146 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 620 transitions. [2021-11-23 06:14:45,146 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) [2021-11-23 06:14:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 620 transitions. [2021-11-23 06:14:45,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 06:14:45,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:45,148 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] [2021-11-23 06:14:45,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 06:14:45,149 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)] === [2021-11-23 06:14:45,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-23 06:14:45,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:45,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292992355] [2021-11-23 06:14:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:45,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:14:45,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:45,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292992355] [2021-11-23 06:14:45,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292992355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:45,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:45,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:14:45,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294650228] [2021-11-23 06:14:45,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:45,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:14:45,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:45,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:14:45,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:14:45,271 INFO L87 Difference]: Start difference. First operand 477 states and 620 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) [2021-11-23 06:14:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:45,762 INFO L93 Difference]: Finished difference Result 855 states and 1111 transitions. [2021-11-23 06:14:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:14:45,762 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 [2021-11-23 06:14:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:45,764 INFO L225 Difference]: With dead ends: 855 [2021-11-23 06:14:45,764 INFO L226 Difference]: Without dead ends: 552 [2021-11-23 06:14:45,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:14:45,766 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 96 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:45,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1639 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 06:14:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-23 06:14:45,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 479. [2021-11-23 06:14:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.34341252699784) internal successors, (622), 478 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 622 transitions. [2021-11-23 06:14:45,787 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 622 transitions. Word has length 44 [2021-11-23 06:14:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:45,788 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 622 transitions. [2021-11-23 06:14:45,788 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) [2021-11-23 06:14:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 622 transitions. [2021-11-23 06:14:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 06:14:45,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:45,791 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] [2021-11-23 06:14:45,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 06:14:45,792 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)] === [2021-11-23 06:14:45,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:45,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-23 06:14:45,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:45,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294332748] [2021-11-23 06:14:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:45,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:45,886 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:45,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675370199] [2021-11-23 06:14:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:45,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:45,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:45,889 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) [2021-11-23 06:14:45,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 06:14:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:46,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:14:46,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:14:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:14:46,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:14:46,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:46,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294332748] [2021-11-23 06:14:46,523 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:14:46,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675370199] [2021-11-23 06:14:46,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675370199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:46,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:46,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:14:46,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138187639] [2021-11-23 06:14:46,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:46,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:14:46,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:46,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:14:46,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:14:46,526 INFO L87 Difference]: Start difference. First operand 479 states and 622 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) [2021-11-23 06:14:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:46,581 INFO L93 Difference]: Finished difference Result 975 states and 1271 transitions. [2021-11-23 06:14:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:14:46,587 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 [2021-11-23 06:14:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:46,589 INFO L225 Difference]: With dead ends: 975 [2021-11-23 06:14:46,589 INFO L226 Difference]: Without dead ends: 500 [2021-11-23 06:14:46,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:14:46,590 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 9 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:46,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1185 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:14:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-23 06:14:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 499. [2021-11-23 06:14:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 483 states have (on average 1.329192546583851) internal successors, (642), 498 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 642 transitions. [2021-11-23 06:14:46,598 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 642 transitions. Word has length 97 [2021-11-23 06:14:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:46,598 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 642 transitions. [2021-11-23 06:14:46,599 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) [2021-11-23 06:14:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 642 transitions. [2021-11-23 06:14:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 06:14:46,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:46,600 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] [2021-11-23 06:14:46,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 06:14:46,810 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 [2021-11-23 06:14:46,811 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)] === [2021-11-23 06:14:46,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-23 06:14:46,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:46,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336185161] [2021-11-23 06:14:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:46,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:46,876 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:46,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883051800] [2021-11-23 06:14:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:46,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:46,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:46,878 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) [2021-11-23 06:14:46,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 06:14:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:47,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:14:47,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:14:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 06:14:47,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:14:47,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:47,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336185161] [2021-11-23 06:14:47,604 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:14:47,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883051800] [2021-11-23 06:14:47,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883051800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:47,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:47,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:14:47,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058966420] [2021-11-23 06:14:47,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:47,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:14:47,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:47,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:14:47,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:14:47,606 INFO L87 Difference]: Start difference. First operand 499 states and 642 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) [2021-11-23 06:14:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:47,656 INFO L93 Difference]: Finished difference Result 811 states and 1048 transitions. [2021-11-23 06:14:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:14:47,656 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 [2021-11-23 06:14:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:47,658 INFO L225 Difference]: With dead ends: 811 [2021-11-23 06:14:47,658 INFO L226 Difference]: Without dead ends: 520 [2021-11-23 06:14:47,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:14:47,660 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 9 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:47,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1185 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:14:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-11-23 06:14:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 519. [2021-11-23 06:14:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 503 states have (on average 1.31610337972167) internal successors, (662), 518 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 662 transitions. [2021-11-23 06:14:47,689 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 662 transitions. Word has length 97 [2021-11-23 06:14:47,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:47,690 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 662 transitions. [2021-11-23 06:14:47,690 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) [2021-11-23 06:14:47,690 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 662 transitions. [2021-11-23 06:14:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 06:14:47,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:47,691 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] [2021-11-23 06:14:47,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 06:14:47,891 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 [2021-11-23 06:14:47,892 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)] === [2021-11-23 06:14:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-23 06:14:47,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:47,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88532215] [2021-11-23 06:14:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:47,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:47,960 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:47,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523146766] [2021-11-23 06:14:47,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:47,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:47,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:47,970 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) [2021-11-23 06:14:47,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 06:14:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:48,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1666 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:14:48,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:14:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:14:48,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:14:48,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:48,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88532215] [2021-11-23 06:14:48,683 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:14:48,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523146766] [2021-11-23 06:14:48,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523146766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:48,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:48,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:14:48,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465137380] [2021-11-23 06:14:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:48,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:14:48,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:14:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:14:48,686 INFO L87 Difference]: Start difference. First operand 519 states and 662 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) [2021-11-23 06:14:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:48,742 INFO L93 Difference]: Finished difference Result 1110 states and 1424 transitions. [2021-11-23 06:14:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:14:48,743 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 [2021-11-23 06:14:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:48,744 INFO L225 Difference]: With dead ends: 1110 [2021-11-23 06:14:48,744 INFO L226 Difference]: Without dead ends: 595 [2021-11-23 06:14:48,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:14:48,746 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 608 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:48,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1532 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:14:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-23 06:14:48,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 505. [2021-11-23 06:14:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 489 states have (on average 1.3108384458077709) internal successors, (641), 504 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 641 transitions. [2021-11-23 06:14:48,754 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 641 transitions. Word has length 97 [2021-11-23 06:14:48,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:48,754 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 641 transitions. [2021-11-23 06:14:48,755 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) [2021-11-23 06:14:48,755 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 641 transitions. [2021-11-23 06:14:48,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 06:14:48,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:48,756 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] [2021-11-23 06:14:48,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 06:14:48,970 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 [2021-11-23 06:14:48,971 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)] === [2021-11-23 06:14:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-23 06:14:48,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:48,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417397193] [2021-11-23 06:14:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:48,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:49,040 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:49,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690667821] [2021-11-23 06:14:49,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:49,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:49,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:49,056 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) [2021-11-23 06:14:49,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 06:14:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:49,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:14:49,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:14:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 06:14:49,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:14:49,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:49,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417397193] [2021-11-23 06:14:49,773 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:14:49,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690667821] [2021-11-23 06:14:49,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690667821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:49,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:49,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:14:49,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888870284] [2021-11-23 06:14:49,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:49,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:14:49,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:14:49,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:14:49,775 INFO L87 Difference]: Start difference. First operand 505 states and 641 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) [2021-11-23 06:14:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:49,825 INFO L93 Difference]: Finished difference Result 785 states and 996 transitions. [2021-11-23 06:14:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:14:49,826 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 [2021-11-23 06:14:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:49,827 INFO L225 Difference]: With dead ends: 785 [2021-11-23 06:14:49,828 INFO L226 Difference]: Without dead ends: 492 [2021-11-23 06:14:49,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:14:49,829 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 377 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:49,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 1386 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:14:49,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-23 06:14:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2021-11-23 06:14:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 475 states have (on average 1.305263157894737) internal successors, (620), 490 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 620 transitions. [2021-11-23 06:14:49,837 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 620 transitions. Word has length 97 [2021-11-23 06:14:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:49,837 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 620 transitions. [2021-11-23 06:14:49,838 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) [2021-11-23 06:14:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 620 transitions. [2021-11-23 06:14:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 06:14:49,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:49,839 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] [2021-11-23 06:14:49,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 06:14:50,055 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 [2021-11-23 06:14:50,055 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)] === [2021-11-23 06:14:50,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:50,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-23 06:14:50,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:50,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528079885] [2021-11-23 06:14:50,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:50,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:50,152 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:50,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904024652] [2021-11-23 06:14:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:50,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:50,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:50,156 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) [2021-11-23 06:14:50,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 06:14:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:50,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 06:14:50,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:14:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:14:51,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:14:51,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:51,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528079885] [2021-11-23 06:14:51,016 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:14:51,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904024652] [2021-11-23 06:14:51,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904024652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:51,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:51,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:14:51,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306762860] [2021-11-23 06:14:51,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:51,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:14:51,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:51,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:14:51,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:14:51,018 INFO L87 Difference]: Start difference. First operand 491 states and 620 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) [2021-11-23 06:14:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:51,082 INFO L93 Difference]: Finished difference Result 1263 states and 1594 transitions. [2021-11-23 06:14:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:14:51,082 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 [2021-11-23 06:14:51,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:51,085 INFO L225 Difference]: With dead ends: 1263 [2021-11-23 06:14:51,085 INFO L226 Difference]: Without dead ends: 776 [2021-11-23 06:14:51,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:14:51,086 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 325 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:51,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1183 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:14:51,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-23 06:14:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 741. [2021-11-23 06:14:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 725 states have (on average 1.3103448275862069) internal successors, (950), 740 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 950 transitions. [2021-11-23 06:14:51,100 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 950 transitions. Word has length 97 [2021-11-23 06:14:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:51,101 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 950 transitions. [2021-11-23 06:14:51,101 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) [2021-11-23 06:14:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 950 transitions. [2021-11-23 06:14:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 06:14:51,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:51,102 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] [2021-11-23 06:14:51,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 06:14:51,315 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 [2021-11-23 06:14:51,316 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)] === [2021-11-23 06:14:51,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:51,317 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-23 06:14:51,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:51,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488150865] [2021-11-23 06:14:51,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:51,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:51,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:51,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124350377] [2021-11-23 06:14:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:51,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:51,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:51,373 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) [2021-11-23 06:14:51,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 06:14:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:51,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 06:14:51,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:14:51,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-23 06:14:51,965 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 15 treesize of output 11 [2021-11-23 06:14:51,999 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 06:14:51,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-23 06:14:52,018 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 34 treesize of output 26 [2021-11-23 06:14:52,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 24 [2021-11-23 06:14:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:14:52,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:14:52,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:52,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488150865] [2021-11-23 06:14:52,140 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:14:52,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124350377] [2021-11-23 06:14:52,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124350377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:52,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:52,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 06:14:52,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832414365] [2021-11-23 06:14:52,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:52,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 06:14:52,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:52,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 06:14:52,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:14:52,142 INFO L87 Difference]: Start difference. First operand 741 states and 950 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) [2021-11-23 06:14:52,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:52,737 INFO L93 Difference]: Finished difference Result 1394 states and 1785 transitions. [2021-11-23 06:14:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 06:14:52,737 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 [2021-11-23 06:14:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:52,739 INFO L225 Difference]: With dead ends: 1394 [2021-11-23 06:14:52,739 INFO L226 Difference]: Without dead ends: 743 [2021-11-23 06:14:52,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 06:14:52,740 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 97 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:52,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 2061 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 06:14:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-11-23 06:14:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 741. [2021-11-23 06:14:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 725 states have (on average 1.3089655172413792) internal successors, (949), 740 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 949 transitions. [2021-11-23 06:14:52,754 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 949 transitions. Word has length 104 [2021-11-23 06:14:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:52,754 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 949 transitions. [2021-11-23 06:14:52,755 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) [2021-11-23 06:14:52,755 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 949 transitions. [2021-11-23 06:14:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 06:14:52,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:52,756 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] [2021-11-23 06:14:52,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 06:14:52,967 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 [2021-11-23 06:14:52,968 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)] === [2021-11-23 06:14:52,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:52,968 INFO L85 PathProgramCache]: Analyzing trace with hash -560944154, now seen corresponding path program 1 times [2021-11-23 06:14:52,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:52,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103655915] [2021-11-23 06:14:52,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:52,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:53,067 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:53,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724320898] [2021-11-23 06:14:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:53,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:53,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:53,084 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) [2021-11-23 06:14:53,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 06:14:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:53,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:14:53,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:14:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:14:54,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:14:54,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:54,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103655915] [2021-11-23 06:14:54,131 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:14:54,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724320898] [2021-11-23 06:14:54,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724320898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:54,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:54,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:14:54,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429453083] [2021-11-23 06:14:54,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:54,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:14:54,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:14:54,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:14:54,133 INFO L87 Difference]: Start difference. First operand 741 states and 949 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) [2021-11-23 06:14:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:54,186 INFO L93 Difference]: Finished difference Result 1506 states and 1939 transitions. [2021-11-23 06:14:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:14:54,187 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 [2021-11-23 06:14:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:54,189 INFO L225 Difference]: With dead ends: 1506 [2021-11-23 06:14:54,189 INFO L226 Difference]: Without dead ends: 783 [2021-11-23 06:14:54,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:14:54,191 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 9 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:54,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1157 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:14:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-23 06:14:54,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 781. [2021-11-23 06:14:54,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.29281045751634) internal successors, (989), 780 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 989 transitions. [2021-11-23 06:14:54,204 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 989 transitions. Word has length 151 [2021-11-23 06:14:54,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:54,204 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 989 transitions. [2021-11-23 06:14:54,204 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) [2021-11-23 06:14:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 989 transitions. [2021-11-23 06:14:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 06:14:54,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:54,205 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] [2021-11-23 06:14:54,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 06:14:54,417 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 [2021-11-23 06:14:54,418 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)] === [2021-11-23 06:14:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:54,418 INFO L85 PathProgramCache]: Analyzing trace with hash 145652452, now seen corresponding path program 1 times [2021-11-23 06:14:54,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:54,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652184638] [2021-11-23 06:14:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:54,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:54,514 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:54,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737592435] [2021-11-23 06:14:54,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:54,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:54,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:54,532 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) [2021-11-23 06:14:54,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 06:14:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:55,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 2195 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:14:55,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:14:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:14:55,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:14:55,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:55,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652184638] [2021-11-23 06:14:55,527 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:14:55,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737592435] [2021-11-23 06:14:55,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737592435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:55,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:55,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:14:55,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096724870] [2021-11-23 06:14:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:55,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:14:55,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:14:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:14:55,529 INFO L87 Difference]: Start difference. First operand 781 states and 989 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) [2021-11-23 06:14:55,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:55,581 INFO L93 Difference]: Finished difference Result 1500 states and 1904 transitions. [2021-11-23 06:14:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:14:55,582 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 [2021-11-23 06:14:55,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:55,584 INFO L225 Difference]: With dead ends: 1500 [2021-11-23 06:14:55,584 INFO L226 Difference]: Without dead ends: 755 [2021-11-23 06:14:55,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:14:55,586 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 594 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:55,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1171 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:14:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-11-23 06:14:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 753. [2021-11-23 06:14:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 737 states have (on average 1.2849389416553596) internal successors, (947), 752 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 947 transitions. [2021-11-23 06:14:55,597 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 947 transitions. Word has length 151 [2021-11-23 06:14:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:55,598 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 947 transitions. [2021-11-23 06:14:55,598 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) [2021-11-23 06:14:55,598 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 947 transitions. [2021-11-23 06:14:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 06:14:55,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:55,599 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] [2021-11-23 06:14:55,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 06:14:55,823 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 [2021-11-23 06:14:55,823 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)] === [2021-11-23 06:14:55,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:55,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1850791156, now seen corresponding path program 1 times [2021-11-23 06:14:55,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:55,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041505580] [2021-11-23 06:14:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:55,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:55,924 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:55,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254619601] [2021-11-23 06:14:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:55,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:55,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:55,926 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) [2021-11-23 06:14:55,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 06:14:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:56,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 06:14:56,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:14:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:14:57,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:14:57,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:57,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041505580] [2021-11-23 06:14:57,039 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:14:57,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254619601] [2021-11-23 06:14:57,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254619601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:57,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:57,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 06:14:57,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151525732] [2021-11-23 06:14:57,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:57,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 06:14:57,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:57,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 06:14:57,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:14:57,041 INFO L87 Difference]: Start difference. First operand 753 states and 947 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) [2021-11-23 06:14:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:57,120 INFO L93 Difference]: Finished difference Result 2215 states and 2792 transitions. [2021-11-23 06:14:57,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 06:14:57,121 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 [2021-11-23 06:14:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:57,125 INFO L225 Difference]: With dead ends: 2215 [2021-11-23 06:14:57,125 INFO L226 Difference]: Without dead ends: 1500 [2021-11-23 06:14:57,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:14:57,127 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 583 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:57,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2316 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 06:14:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-11-23 06:14:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 799. [2021-11-23 06:14:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 783 states have (on average 1.2733077905491699) internal successors, (997), 798 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 997 transitions. [2021-11-23 06:14:57,143 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 997 transitions. Word has length 151 [2021-11-23 06:14:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:57,143 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 997 transitions. [2021-11-23 06:14:57,143 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) [2021-11-23 06:14:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 997 transitions. [2021-11-23 06:14:57,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 06:14:57,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:57,145 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] [2021-11-23 06:14:57,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 06:14:57,365 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 [2021-11-23 06:14:57,365 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)] === [2021-11-23 06:14:57,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1918499578, now seen corresponding path program 1 times [2021-11-23 06:14:57,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:57,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661652844] [2021-11-23 06:14:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:57,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:57,463 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:57,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516243385] [2021-11-23 06:14:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:57,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:57,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:57,465 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) [2021-11-23 06:14:57,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 06:14:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:14:58,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 06:14:58,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:14:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:14:58,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:14:58,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:14:58,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661652844] [2021-11-23 06:14:58,660 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:14:58,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516243385] [2021-11-23 06:14:58,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516243385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:14:58,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:14:58,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:14:58,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727715062] [2021-11-23 06:14:58,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:14:58,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:14:58,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:14:58,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:14:58,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:14:58,662 INFO L87 Difference]: Start difference. First operand 799 states and 997 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) [2021-11-23 06:14:58,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:14:58,703 INFO L93 Difference]: Finished difference Result 1507 states and 1891 transitions. [2021-11-23 06:14:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:14:58,703 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 [2021-11-23 06:14:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:14:58,706 INFO L225 Difference]: With dead ends: 1507 [2021-11-23 06:14:58,706 INFO L226 Difference]: Without dead ends: 735 [2021-11-23 06:14:58,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:14:58,708 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 574 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:14:58,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 1165 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:14:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-23 06:14:58,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2021-11-23 06:14:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 719 states have (on average 1.278164116828929) internal successors, (919), 734 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:14:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 919 transitions. [2021-11-23 06:14:58,720 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 919 transitions. Word has length 151 [2021-11-23 06:14:58,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:14:58,721 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 919 transitions. [2021-11-23 06:14:58,721 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) [2021-11-23 06:14:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 919 transitions. [2021-11-23 06:14:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 06:14:58,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:14:58,722 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] [2021-11-23 06:14:58,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 06:14:58,943 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 [2021-11-23 06:14:58,944 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)] === [2021-11-23 06:14:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:14:58,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1737579534, now seen corresponding path program 1 times [2021-11-23 06:14:58,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:14:58,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191225071] [2021-11-23 06:14:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:58,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:14:59,066 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:14:59,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234833069] [2021-11-23 06:14:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:14:59,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:14:59,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:14:59,067 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) [2021-11-23 06:14:59,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 06:15:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:15:00,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2181 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 06:15:00,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:15:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:15:00,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:15:00,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:15:00,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191225071] [2021-11-23 06:15:00,384 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:15:00,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234833069] [2021-11-23 06:15:00,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234833069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:15:00,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:15:00,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:15:00,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997429060] [2021-11-23 06:15:00,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:15:00,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:15:00,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:15:00,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:15:00,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:15:00,385 INFO L87 Difference]: Start difference. First operand 735 states and 919 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) [2021-11-23 06:15:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:15:00,450 INFO L93 Difference]: Finished difference Result 1759 states and 2227 transitions. [2021-11-23 06:15:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:15:00,451 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 [2021-11-23 06:15:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:15:00,454 INFO L225 Difference]: With dead ends: 1759 [2021-11-23 06:15:00,454 INFO L226 Difference]: Without dead ends: 1073 [2021-11-23 06:15:00,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:15:00,456 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 306 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:15:00,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 1153 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:15:00,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-11-23 06:15:00,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 908. [2021-11-23 06:15:00,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 892 states have (on average 1.298206278026906) internal successors, (1158), 907 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:15:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1158 transitions. [2021-11-23 06:15:00,476 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1158 transitions. Word has length 151 [2021-11-23 06:15:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:15:00,476 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1158 transitions. [2021-11-23 06:15:00,477 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) [2021-11-23 06:15:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1158 transitions. [2021-11-23 06:15:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-23 06:15:00,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:15:00,478 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] [2021-11-23 06:15:00,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-23 06:15:00,691 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 [2021-11-23 06:15:00,692 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)] === [2021-11-23 06:15:00,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:15:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1603750718, now seen corresponding path program 1 times [2021-11-23 06:15:00,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:15:00,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218961807] [2021-11-23 06:15:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:15:00,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:15:00,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:15:00,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472802990] [2021-11-23 06:15:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:15:00,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:15:00,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:15:00,770 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) [2021-11-23 06:15:00,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 06:15:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:15:01,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 06:15:01,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:15:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:15:01,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:15:01,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:15:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218961807] [2021-11-23 06:15:01,971 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:15:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472802990] [2021-11-23 06:15:01,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472802990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:15:01,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:15:01,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:15:01,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515300233] [2021-11-23 06:15:01,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:15:01,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:15:01,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:15:01,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:15:01,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:15:01,972 INFO L87 Difference]: Start difference. First operand 908 states and 1158 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) [2021-11-23 06:15:02,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:15:02,251 INFO L93 Difference]: Finished difference Result 1505 states and 1917 transitions. [2021-11-23 06:15:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:15:02,252 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 [2021-11-23 06:15:02,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:15:02,254 INFO L225 Difference]: With dead ends: 1505 [2021-11-23 06:15:02,254 INFO L226 Difference]: Without dead ends: 724 [2021-11-23 06:15:02,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:15:02,255 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1015 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 06:15:02,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 601 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 06:15:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-23 06:15:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2021-11-23 06:15:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 708 states have (on average 1.2725988700564972) internal successors, (901), 723 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:15:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 901 transitions. [2021-11-23 06:15:02,268 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 901 transitions. Word has length 158 [2021-11-23 06:15:02,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:15:02,268 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 901 transitions. [2021-11-23 06:15:02,268 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) [2021-11-23 06:15:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 901 transitions. [2021-11-23 06:15:02,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 06:15:02,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:15:02,270 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] [2021-11-23 06:15:02,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-23 06:15:02,483 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 [2021-11-23 06:15:02,483 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)] === [2021-11-23 06:15:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:15:02,484 INFO L85 PathProgramCache]: Analyzing trace with hash -881822645, now seen corresponding path program 1 times [2021-11-23 06:15:02,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:15:02,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957682443] [2021-11-23 06:15:02,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:15:02,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:15:02,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:15:02,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319932456] [2021-11-23 06:15:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:15:02,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:15:02,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:15:02,539 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) [2021-11-23 06:15:02,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 06:15:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:15:05,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 06:15:05,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:15:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:15:05,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:15:05,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:15:05,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957682443] [2021-11-23 06:15:05,270 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:15:05,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319932456] [2021-11-23 06:15:05,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319932456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:15:05,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:15:05,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:15:05,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952104796] [2021-11-23 06:15:05,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:15:05,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:15:05,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:15:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:15:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:15:05,271 INFO L87 Difference]: Start difference. First operand 724 states and 901 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) [2021-11-23 06:15:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:15:05,308 INFO L93 Difference]: Finished difference Result 1407 states and 1762 transitions. [2021-11-23 06:15:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:15:05,309 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 [2021-11-23 06:15:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:15:05,311 INFO L225 Difference]: With dead ends: 1407 [2021-11-23 06:15:05,311 INFO L226 Difference]: Without dead ends: 726 [2021-11-23 06:15:05,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:15:05,312 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 0 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:15:05,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1158 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:15:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-11-23 06:15:05,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2021-11-23 06:15:05,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 710 states have (on average 1.271830985915493) internal successors, (903), 725 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:15:05,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 903 transitions. [2021-11-23 06:15:05,324 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 903 transitions. Word has length 165 [2021-11-23 06:15:05,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:15:05,324 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 903 transitions. [2021-11-23 06:15:05,324 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) [2021-11-23 06:15:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 903 transitions. [2021-11-23 06:15:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-23 06:15:05,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:15:05,325 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] [2021-11-23 06:15:05,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-23 06:15:05,539 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 [2021-11-23 06:15:05,540 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)] === [2021-11-23 06:15:05,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:15:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash 797655390, now seen corresponding path program 1 times [2021-11-23 06:15:05,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:15:05,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734034369] [2021-11-23 06:15:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:15:05,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:15:05,593 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:15:05,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966031233] [2021-11-23 06:15:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:15:05,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:15:05,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:15:05,598 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) [2021-11-23 06:15:05,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-23 06:19:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:19:42,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 06:19:42,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:19:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 06:19:42,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 06:19:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 06:19:42,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:19:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734034369] [2021-11-23 06:19:42,643 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:19:42,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966031233] [2021-11-23 06:19:42,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966031233] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 06:19:42,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 06:19:42,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 06:19:42,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252235467] [2021-11-23 06:19:42,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:19:42,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:19:42,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:19:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:19:42,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:19:42,645 INFO L87 Difference]: Start difference. First operand 726 states and 903 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:19:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:19:42,678 INFO L93 Difference]: Finished difference Result 1407 states and 1761 transitions. [2021-11-23 06:19:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:19:42,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 [2021-11-23 06:19:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:19:42,681 INFO L225 Difference]: With dead ends: 1407 [2021-11-23 06:19:42,681 INFO L226 Difference]: Without dead ends: 728 [2021-11-23 06:19:42,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:19:42,683 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 0 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:19:42,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1156 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:19:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-23 06:19:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2021-11-23 06:19:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 712 states have (on average 1.271067415730337) internal successors, (905), 727 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:19:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 905 transitions. [2021-11-23 06:19:42,696 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 905 transitions. Word has length 167 [2021-11-23 06:19:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:19:42,696 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 905 transitions. [2021-11-23 06:19:42,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:19:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 905 transitions. [2021-11-23 06:19:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-23 06:19:42,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:19:42,698 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, 1, 1] [2021-11-23 06:19:42,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-23 06:19:42,898 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 [2021-11-23 06:19:42,898 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)] === [2021-11-23 06:19:42,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:19:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1308439913, now seen corresponding path program 1 times [2021-11-23 06:19:42,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:19:42,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19097458] [2021-11-23 06:19:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:19:42,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:19:42,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:19:42,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951862494] [2021-11-23 06:19:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:19:42,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:19:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:19:42,957 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) [2021-11-23 06:19:42,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 06:19:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:19:44,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 06:19:44,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:19:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 06:19:45,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 06:19:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 06:19:45,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:19:45,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19097458] [2021-11-23 06:19:45,293 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:19:45,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951862494] [2021-11-23 06:19:45,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951862494] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 06:19:45,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 06:19:45,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-23 06:19:45,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711075358] [2021-11-23 06:19:45,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 06:19:45,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 06:19:45,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:19:45,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 06:19:45,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 06:19:45,294 INFO L87 Difference]: Start difference. First operand 728 states and 905 transitions. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:19:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:19:45,402 INFO L93 Difference]: Finished difference Result 1420 states and 1781 transitions. [2021-11-23 06:19:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 06:19:45,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-23 06:19:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:19:45,405 INFO L225 Difference]: With dead ends: 1420 [2021-11-23 06:19:45,405 INFO L226 Difference]: Without dead ends: 736 [2021-11-23 06:19:45,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 06:19:45,406 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 0 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 06:19:45,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2869 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 06:19:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-11-23 06:19:45,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2021-11-23 06:19:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 720 states have (on average 1.2680555555555555) internal successors, (913), 735 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:19:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 913 transitions. [2021-11-23 06:19:45,421 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 913 transitions. Word has length 169 [2021-11-23 06:19:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:19:45,421 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 913 transitions. [2021-11-23 06:19:45,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:19:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 913 transitions. [2021-11-23 06:19:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-23 06:19:45,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:19:45,423 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] [2021-11-23 06:19:45,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 06:19:45,635 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 [2021-11-23 06:19:45,636 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)] === [2021-11-23 06:19:45,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:19:45,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1689406549, now seen corresponding path program 2 times [2021-11-23 06:19:45,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:19:45,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445013324] [2021-11-23 06:19:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:19:45,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:19:45,714 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:19:45,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024172715] [2021-11-23 06:19:45,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 06:19:45,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:19:45,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:19:45,720 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) [2021-11-23 06:19:45,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 06:26:35,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 06:26:35,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 06:26:35,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 06:26:35,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:26:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 06:26:35,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 06:26:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 06:26:35,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:26:35,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445013324] [2021-11-23 06:26:35,872 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:26:35,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024172715] [2021-11-23 06:26:35,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024172715] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 06:26:35,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 06:26:35,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-11-23 06:26:35,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526102498] [2021-11-23 06:26:35,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 06:26:35,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 06:26:35,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:26:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 06:26:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-23 06:26:35,874 INFO L87 Difference]: Start difference. First operand 736 states and 913 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) [2021-11-23 06:26:36,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:26:36,525 INFO L93 Difference]: Finished difference Result 1443 states and 1814 transitions. [2021-11-23 06:26:36,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 06:26:36,525 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 [2021-11-23 06:26:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:26:36,527 INFO L225 Difference]: With dead ends: 1443 [2021-11-23 06:26:36,527 INFO L226 Difference]: Without dead ends: 754 [2021-11-23 06:26:36,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2021-11-23 06:26:36,544 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 2 mSDsluCounter, 5127 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5711 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 06:26:36,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 5711 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 06:26:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-23 06:26:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2021-11-23 06:26:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 738 states have (on average 1.2615176151761518) internal successors, (931), 753 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 931 transitions. [2021-11-23 06:26:36,557 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 931 transitions. Word has length 177 [2021-11-23 06:26:36,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:26:36,558 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 931 transitions. [2021-11-23 06:26:36,558 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) [2021-11-23 06:26:36,558 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 931 transitions. [2021-11-23 06:26:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-23 06:26:36,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:26:36,559 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] [2021-11-23 06:26:36,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-23 06:26:36,760 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 [2021-11-23 06:26:36,760 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)] === [2021-11-23 06:26:36,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:26:36,760 INFO L85 PathProgramCache]: Analyzing trace with hash 726279838, now seen corresponding path program 3 times [2021-11-23 06:26:36,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:26:36,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537422807] [2021-11-23 06:26:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:36,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:26:36,841 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:26:36,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16869587] [2021-11-23 06:26:36,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 06:26:36,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:36,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:26:36,849 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) [2021-11-23 06:26:36,850 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