./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX --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 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:20:20,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:20:20,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:20:20,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:20:20,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:20:20,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:20:20,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:20:20,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:20:20,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:20:20,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:20:20,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:20:20,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:20:20,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:20:20,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:20:20,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:20:20,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:20:20,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:20:20,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:20:20,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:20:20,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:20:20,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:20:20,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:20:20,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:20:20,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:20:20,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:20:20,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:20:20,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:20:20,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:20:20,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:20:20,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:20:20,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:20:20,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:20:20,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:20:20,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:20:20,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:20:20,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:20:20,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:20:20,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:20:20,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:20:20,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:20:20,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:20:20,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:20:20,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:20:20,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:20:20,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:20:20,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:20:20,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:20:20,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:20:20,204 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:20:20,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:20:20,205 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:20:20,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:20:20,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:20:20,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:20:20,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:20:20,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:20:20,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:20:20,207 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:20:20,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:20:20,208 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:20:20,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:20:20,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:20:20,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:20:20,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:20:20,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:20:20,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:20:20,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:20:20,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:20:20,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:20:20,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:20:20,211 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:20:20,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:20:20,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:20:20,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:20:20,212 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2021-11-09 09:20:20,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:20:20,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:20:20,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:20:20,483 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:20:20,484 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:20:20,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-09 09:20:20,550 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/data/669803c83/08cca2ff04d34241ae33d89a513f4f91/FLAG981f7a123 [2021-11-09 09:20:21,146 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:20:21,147 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-09 09:20:21,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/data/669803c83/08cca2ff04d34241ae33d89a513f4f91/FLAG981f7a123 [2021-11-09 09:20:21,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/data/669803c83/08cca2ff04d34241ae33d89a513f4f91 [2021-11-09 09:20:21,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:20:21,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:20:21,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:20:21,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:20:21,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:20:21,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:20:21" (1/1) ... [2021-11-09 09:20:21,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3032968c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:21, skipping insertion in model container [2021-11-09 09:20:21,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:20:21" (1/1) ... [2021-11-09 09:20:21,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:20:21,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:20:22,103 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2021-11-09 09:20:22,122 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2021-11-09 09:20:22,222 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2021-11-09 09:20:22,223 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2021-11-09 09:20:22,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:20:22,238 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:20:22,270 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2021-11-09 09:20:22,272 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2021-11-09 09:20:22,331 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2021-11-09 09:20:22,332 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2021-11-09 09:20:22,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:20:22,415 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:20:22,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22 WrapperNode [2021-11-09 09:20:22,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:20:22,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:20:22,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:20:22,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:20:22,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (1/1) ... [2021-11-09 09:20:22,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (1/1) ... [2021-11-09 09:20:22,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:20:22,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:20:22,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:20:22,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:20:22,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (1/1) ... [2021-11-09 09:20:22,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (1/1) ... [2021-11-09 09:20:22,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (1/1) ... [2021-11-09 09:20:22,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (1/1) ... [2021-11-09 09:20:22,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (1/1) ... [2021-11-09 09:20:22,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (1/1) ... [2021-11-09 09:20:22,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (1/1) ... [2021-11-09 09:20:22,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:20:22,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:20:22,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:20:22,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:20:22,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (1/1) ... [2021-11-09 09:20:22,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:20:22,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:22,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:20:22,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:20:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:20:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 09:20:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:20:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:20:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:20:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:20:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:20:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:20:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:20:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:20:22,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:20:24,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:20:24,233 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-09 09:20:24,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:20:24 BoogieIcfgContainer [2021-11-09 09:20:24,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:20:24,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:20:24,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:20:24,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:20:24,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:20:21" (1/3) ... [2021-11-09 09:20:24,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538cf837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:20:24, skipping insertion in model container [2021-11-09 09:20:24,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:22" (2/3) ... [2021-11-09 09:20:24,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538cf837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:20:24, skipping insertion in model container [2021-11-09 09:20:24,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:20:24" (3/3) ... [2021-11-09 09:20:24,250 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-1.i [2021-11-09 09:20:24,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:20:24,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-09 09:20:24,329 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:20:24,337 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 [2021-11-09 09:20:24,338 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-09 09:20:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 09:20:24,383 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:24,384 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:24,384 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-09 09:20:24,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:24,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421315294] [2021-11-09 09:20:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:24,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:24,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:24,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421315294] [2021-11-09 09:20:24,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421315294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:24,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:24,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:20:24,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889577543] [2021-11-09 09:20:24,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:20:24,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:24,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:20:24,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:20:24,653 INFO L87 Difference]: Start difference. First operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:24,711 INFO L93 Difference]: Finished difference Result 466 states and 739 transitions. [2021-11-09 09:20:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:20:24,712 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-09 09:20:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:24,725 INFO L225 Difference]: With dead ends: 466 [2021-11-09 09:20:24,725 INFO L226 Difference]: Without dead ends: 227 [2021-11-09 09:20:24,729 INFO L786 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 [2021-11-09 09:20:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-09 09:20:24,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-09 09:20:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 226 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 285 transitions. [2021-11-09 09:20:24,780 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 285 transitions. Word has length 8 [2021-11-09 09:20:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:24,780 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 285 transitions. [2021-11-09 09:20:24,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 285 transitions. [2021-11-09 09:20:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:20:24,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:24,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:24,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:20:24,783 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-09 09:20:24,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:24,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529092485] [2021-11-09 09:20:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:24,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:24,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:24,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529092485] [2021-11-09 09:20:24,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529092485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:24,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:24,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:20:24,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578819703] [2021-11-09 09:20:24,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:20:24,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:24,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:20:24,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:20:24,859 INFO L87 Difference]: Start difference. First operand 227 states and 285 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:25,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:25,350 INFO L93 Difference]: Finished difference Result 479 states and 601 transitions. [2021-11-09 09:20:25,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:20:25,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-09 09:20:25,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:25,355 INFO L225 Difference]: With dead ends: 479 [2021-11-09 09:20:25,355 INFO L226 Difference]: Without dead ends: 369 [2021-11-09 09:20:25,356 INFO L786 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 [2021-11-09 09:20:25,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-09 09:20:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 229. [2021-11-09 09:20:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.31651376146789) internal successors, (287), 228 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 287 transitions. [2021-11-09 09:20:25,380 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 287 transitions. Word has length 10 [2021-11-09 09:20:25,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:25,380 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 287 transitions. [2021-11-09 09:20:25,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:25,381 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 287 transitions. [2021-11-09 09:20:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 09:20:25,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:25,382 INFO L513 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] [2021-11-09 09:20:25,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:20:25,383 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:25,384 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-09 09:20:25,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:25,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117563128] [2021-11-09 09:20:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:25,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:25,417 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:25,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619313290] [2021-11-09 09:20:25,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:25,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:25,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:25,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:25,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:20:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:25,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:20:25,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:25,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:25,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117563128] [2021-11-09 09:20:25,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:25,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619313290] [2021-11-09 09:20:25,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619313290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:25,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:25,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:20:25,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596200642] [2021-11-09 09:20:25,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:20:25,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:20:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:20:25,808 INFO L87 Difference]: Start difference. First operand 229 states and 287 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) [2021-11-09 09:20:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:25,882 INFO L93 Difference]: Finished difference Result 475 states and 601 transitions. [2021-11-09 09:20:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:20:25,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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 [2021-11-09 09:20:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:25,885 INFO L225 Difference]: With dead ends: 475 [2021-11-09 09:20:25,885 INFO L226 Difference]: Without dead ends: 250 [2021-11-09 09:20:25,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:20:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-09 09:20:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-11-09 09:20:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 238 states have (on average 1.2899159663865547) internal successors, (307), 248 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 307 transitions. [2021-11-09 09:20:25,916 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 307 transitions. Word has length 44 [2021-11-09 09:20:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:25,917 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 307 transitions. [2021-11-09 09:20:25,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) [2021-11-09 09:20:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 307 transitions. [2021-11-09 09:20:25,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 09:20:25,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:25,922 INFO L513 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] [2021-11-09 09:20:25,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:26,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:26,139 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash -821195099, now seen corresponding path program 1 times [2021-11-09 09:20:26,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:26,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499456508] [2021-11-09 09:20:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:26,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:26,163 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:26,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513202539] [2021-11-09 09:20:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:26,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:26,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:26,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:26,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:20:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:26,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:20:26,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:26,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:26,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499456508] [2021-11-09 09:20:26,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:26,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513202539] [2021-11-09 09:20:26,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513202539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:26,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:26,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:20:26,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970269351] [2021-11-09 09:20:26,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:20:26,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:20:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:20:26,529 INFO L87 Difference]: Start difference. First operand 249 states and 307 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) [2021-11-09 09:20:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:26,629 INFO L93 Difference]: Finished difference Result 487 states and 603 transitions. [2021-11-09 09:20:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:20:26,630 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 [2021-11-09 09:20:26,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:26,632 INFO L225 Difference]: With dead ends: 487 [2021-11-09 09:20:26,632 INFO L226 Difference]: Without dead ends: 242 [2021-11-09 09:20:26,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:20:26,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-09 09:20:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2021-11-09 09:20:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 224 states have (on average 1.2767857142857142) internal successors, (286), 234 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2021-11-09 09:20:26,642 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 44 [2021-11-09 09:20:26,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:26,643 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2021-11-09 09:20:26,643 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) [2021-11-09 09:20:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2021-11-09 09:20:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 09:20:26,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:26,647 INFO L513 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] [2021-11-09 09:20:26,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:26,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:26,875 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:26,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-09 09:20:26,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:26,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029611832] [2021-11-09 09:20:26,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:26,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:26,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:26,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253353477] [2021-11-09 09:20:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:26,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:26,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:26,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:26,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:20:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:27,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:20:27,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:27,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:27,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029611832] [2021-11-09 09:20:27,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:27,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253353477] [2021-11-09 09:20:27,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253353477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:27,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:27,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:20:27,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973422299] [2021-11-09 09:20:27,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:20:27,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:27,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:20:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:20:27,269 INFO L87 Difference]: Start difference. First operand 235 states and 286 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) [2021-11-09 09:20:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:27,394 INFO L93 Difference]: Finished difference Result 446 states and 549 transitions. [2021-11-09 09:20:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:20:27,394 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 [2021-11-09 09:20:27,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:27,396 INFO L225 Difference]: With dead ends: 446 [2021-11-09 09:20:27,396 INFO L226 Difference]: Without dead ends: 444 [2021-11-09 09:20:27,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:20:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-09 09:20:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 233. [2021-11-09 09:20:27,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 223 states have (on average 1.2735426008968609) internal successors, (284), 232 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2021-11-09 09:20:27,406 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 44 [2021-11-09 09:20:27,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:27,407 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2021-11-09 09:20:27,407 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) [2021-11-09 09:20:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2021-11-09 09:20:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 09:20:27,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:27,408 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:27,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:27,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:27,635 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:27,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:27,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-09 09:20:27,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:27,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047473224] [2021-11-09 09:20:27,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:27,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:27,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:27,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797562580] [2021-11-09 09:20:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:27,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:27,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:27,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:27,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:20:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:27,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:20:27,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:28,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:28,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047473224] [2021-11-09 09:20:28,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:28,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797562580] [2021-11-09 09:20:28,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797562580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:28,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:28,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:20:28,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068845621] [2021-11-09 09:20:28,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:20:28,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:28,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:20:28,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:20:28,070 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:28,212 INFO L93 Difference]: Finished difference Result 940 states and 1155 transitions. [2021-11-09 09:20:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:20:28,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-09 09:20:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:28,217 INFO L225 Difference]: With dead ends: 940 [2021-11-09 09:20:28,217 INFO L226 Difference]: Without dead ends: 711 [2021-11-09 09:20:28,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:20:28,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-11-09 09:20:28,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 325. [2021-11-09 09:20:28,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 316 states have (on average 1.25) internal successors, (395), 324 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 395 transitions. [2021-11-09 09:20:28,234 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 395 transitions. Word has length 51 [2021-11-09 09:20:28,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:28,234 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 395 transitions. [2021-11-09 09:20:28,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:28,234 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 395 transitions. [2021-11-09 09:20:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 09:20:28,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:28,236 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:28,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:28,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:28,458 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:28,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1193587178, now seen corresponding path program 1 times [2021-11-09 09:20:28,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:28,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395276012] [2021-11-09 09:20:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:28,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:28,477 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:28,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880064468] [2021-11-09 09:20:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:28,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:28,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:28,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:28,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:20:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:28,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:20:28,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:28,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:28,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395276012] [2021-11-09 09:20:28,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:28,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880064468] [2021-11-09 09:20:28,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880064468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:28,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:28,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:20:28,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402786032] [2021-11-09 09:20:28,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:20:28,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:20:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:20:29,000 INFO L87 Difference]: Start difference. First operand 325 states and 395 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:29,133 INFO L93 Difference]: Finished difference Result 686 states and 832 transitions. [2021-11-09 09:20:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:20:29,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-09 09:20:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:29,136 INFO L225 Difference]: With dead ends: 686 [2021-11-09 09:20:29,136 INFO L226 Difference]: Without dead ends: 365 [2021-11-09 09:20:29,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:20:29,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-09 09:20:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 336. [2021-11-09 09:20:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 328 states have (on average 1.2560975609756098) internal successors, (412), 335 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 412 transitions. [2021-11-09 09:20:29,152 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 412 transitions. Word has length 54 [2021-11-09 09:20:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:29,152 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 412 transitions. [2021-11-09 09:20:29,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 412 transitions. [2021-11-09 09:20:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-09 09:20:29,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:29,154 INFO L513 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] [2021-11-09 09:20:29,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:29,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:29,375 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:29,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash 901612414, now seen corresponding path program 1 times [2021-11-09 09:20:29,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:29,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742131692] [2021-11-09 09:20:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:29,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:29,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:29,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923136623] [2021-11-09 09:20:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:29,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:29,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:29,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:29,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:20:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:29,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:20:29,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:29,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:29,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742131692] [2021-11-09 09:20:29,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:29,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923136623] [2021-11-09 09:20:29,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923136623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:29,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:29,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:20:29,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230746866] [2021-11-09 09:20:29,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:20:29,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:29,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:20:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:20:29,917 INFO L87 Difference]: Start difference. First operand 336 states and 412 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:30,036 INFO L93 Difference]: Finished difference Result 626 states and 773 transitions. [2021-11-09 09:20:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:20:30,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-09 09:20:30,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:30,042 INFO L225 Difference]: With dead ends: 626 [2021-11-09 09:20:30,042 INFO L226 Difference]: Without dead ends: 342 [2021-11-09 09:20:30,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:20:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-09 09:20:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2021-11-09 09:20:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 328 states have (on average 1.2530487804878048) internal successors, (411), 335 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:30,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 411 transitions. [2021-11-09 09:20:30,056 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 411 transitions. Word has length 78 [2021-11-09 09:20:30,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:30,057 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 411 transitions. [2021-11-09 09:20:30,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:30,057 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 411 transitions. [2021-11-09 09:20:30,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:20:30,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:30,058 INFO L513 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] [2021-11-09 09:20:30,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:30,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-09 09:20:30,276 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:30,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash -611683268, now seen corresponding path program 1 times [2021-11-09 09:20:30,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:30,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48740985] [2021-11-09 09:20:30,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:30,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:30,296 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:30,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915857639] [2021-11-09 09:20:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:30,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:30,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:30,298 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:30,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:20:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:30,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:20:30,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:30,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:20:30,828 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 15 treesize of output 7 [2021-11-09 09:20:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:20:30,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:30,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48740985] [2021-11-09 09:20:30,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:30,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915857639] [2021-11-09 09:20:30,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915857639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:30,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:30,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:20:30,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913889776] [2021-11-09 09:20:30,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:20:30,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:30,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:20:30,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:20:30,845 INFO L87 Difference]: Start difference. First operand 336 states and 411 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:31,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:31,195 INFO L93 Difference]: Finished difference Result 447 states and 551 transitions. [2021-11-09 09:20:31,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:20:31,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 79 [2021-11-09 09:20:31,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:31,198 INFO L225 Difference]: With dead ends: 447 [2021-11-09 09:20:31,199 INFO L226 Difference]: Without dead ends: 431 [2021-11-09 09:20:31,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:20:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-09 09:20:31,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 338. [2021-11-09 09:20:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 330 states have (on average 1.2515151515151515) internal successors, (413), 337 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 413 transitions. [2021-11-09 09:20:31,216 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 413 transitions. Word has length 79 [2021-11-09 09:20:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:31,218 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 413 transitions. [2021-11-09 09:20:31,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 413 transitions. [2021-11-09 09:20:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-09 09:20:31,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:31,219 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:31,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:31,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:31,435 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:31,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1201768388, now seen corresponding path program 1 times [2021-11-09 09:20:31,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:31,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760194716] [2021-11-09 09:20:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:31,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:31,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:31,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672232977] [2021-11-09 09:20:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:31,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:31,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:31,455 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:31,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 09:20:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:31,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 09:20:31,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:32,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:32,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760194716] [2021-11-09 09:20:32,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:32,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672232977] [2021-11-09 09:20:32,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672232977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:32,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:32,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:20:32,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199720767] [2021-11-09 09:20:32,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:20:32,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:32,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:20:32,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:20:32,166 INFO L87 Difference]: Start difference. First operand 338 states and 413 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:32,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:32,251 INFO L93 Difference]: Finished difference Result 625 states and 771 transitions. [2021-11-09 09:20:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:20:32,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-09 09:20:32,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:32,253 INFO L225 Difference]: With dead ends: 625 [2021-11-09 09:20:32,253 INFO L226 Difference]: Without dead ends: 339 [2021-11-09 09:20:32,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:20:32,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-09 09:20:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-11-09 09:20:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 331 states have (on average 1.2507552870090635) internal successors, (414), 338 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 414 transitions. [2021-11-09 09:20:32,267 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 414 transitions. Word has length 81 [2021-11-09 09:20:32,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:32,268 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 414 transitions. [2021-11-09 09:20:32,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:32,268 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 414 transitions. [2021-11-09 09:20:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-09 09:20:32,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:32,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:32,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:32,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 09:20:32,495 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:32,496 INFO L85 PathProgramCache]: Analyzing trace with hash -169971840, now seen corresponding path program 1 times [2021-11-09 09:20:32,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:32,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597101106] [2021-11-09 09:20:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:32,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:32,513 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:32,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947151590] [2021-11-09 09:20:32,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:32,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:32,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:32,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:32,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 09:20:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:32,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 09:20:32,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:20:33,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:33,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597101106] [2021-11-09 09:20:33,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:33,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947151590] [2021-11-09 09:20:33,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947151590] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:33,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:33,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 09:20:33,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279215477] [2021-11-09 09:20:33,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:20:33,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:33,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:20:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:20:33,265 INFO L87 Difference]: Start difference. First operand 339 states and 414 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:33,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:33,859 INFO L93 Difference]: Finished difference Result 627 states and 773 transitions. [2021-11-09 09:20:33,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:20:33,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-09 09:20:33,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:33,862 INFO L225 Difference]: With dead ends: 627 [2021-11-09 09:20:33,862 INFO L226 Difference]: Without dead ends: 340 [2021-11-09 09:20:33,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:20:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-09 09:20:33,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-11-09 09:20:33,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 332 states have (on average 1.25) internal successors, (415), 339 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 415 transitions. [2021-11-09 09:20:33,879 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 415 transitions. Word has length 82 [2021-11-09 09:20:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:33,880 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 415 transitions. [2021-11-09 09:20:33,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 415 transitions. [2021-11-09 09:20:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 09:20:33,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:33,881 INFO L513 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] [2021-11-09 09:20:33,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-09 09:20:34,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:34,099 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:34,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:34,099 INFO L85 PathProgramCache]: Analyzing trace with hash 255754052, now seen corresponding path program 2 times [2021-11-09 09:20:34,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:34,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12516878] [2021-11-09 09:20:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:34,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:34,118 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:34,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723487414] [2021-11-09 09:20:34,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:20:34,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:34,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:34,119 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:34,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 09:20:34,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 09:20:34,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:20:34,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:20:34,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:20:34,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:34,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12516878] [2021-11-09 09:20:34,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:34,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723487414] [2021-11-09 09:20:34,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723487414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:34,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:34,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:20:34,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609242076] [2021-11-09 09:20:34,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:20:34,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:34,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:20:34,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:20:34,909 INFO L87 Difference]: Start difference. First operand 340 states and 415 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:34,971 INFO L93 Difference]: Finished difference Result 629 states and 775 transitions. [2021-11-09 09:20:34,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:20:34,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 83 [2021-11-09 09:20:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:34,974 INFO L225 Difference]: With dead ends: 629 [2021-11-09 09:20:34,974 INFO L226 Difference]: Without dead ends: 341 [2021-11-09 09:20:34,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:20:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-09 09:20:34,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-11-09 09:20:34,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 333 states have (on average 1.2492492492492493) internal successors, (416), 340 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 416 transitions. [2021-11-09 09:20:34,994 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 416 transitions. Word has length 83 [2021-11-09 09:20:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:34,995 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 416 transitions. [2021-11-09 09:20:34,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 416 transitions. [2021-11-09 09:20:34,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-09 09:20:34,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:34,996 INFO L513 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] [2021-11-09 09:20:35,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:35,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:35,219 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1602172737, now seen corresponding path program 1 times [2021-11-09 09:20:35,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:35,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974352770] [2021-11-09 09:20:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:35,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:35,244 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:35,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860459935] [2021-11-09 09:20:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:35,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:35,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:35,246 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:35,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 09:20:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:36,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-09 09:20:36,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:20:36,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:36,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974352770] [2021-11-09 09:20:36,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:20:36,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860459935] [2021-11-09 09:20:36,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860459935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:36,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:36,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 09:20:36,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185711053] [2021-11-09 09:20:36,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:20:36,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:20:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:20:36,357 INFO L87 Difference]: Start difference. First operand 341 states and 416 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:37,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:37,010 INFO L93 Difference]: Finished difference Result 631 states and 777 transitions. [2021-11-09 09:20:37,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:20:37,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-09 09:20:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:37,013 INFO L225 Difference]: With dead ends: 631 [2021-11-09 09:20:37,013 INFO L226 Difference]: Without dead ends: 342 [2021-11-09 09:20:37,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:20:37,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-09 09:20:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-11-09 09:20:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 334 states have (on average 1.248502994011976) internal successors, (417), 341 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 417 transitions. [2021-11-09 09:20:37,030 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 417 transitions. Word has length 84 [2021-11-09 09:20:37,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:37,031 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 417 transitions. [2021-11-09 09:20:37,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:20:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 417 transitions. [2021-11-09 09:20:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 09:20:37,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:37,032 INFO L513 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:37,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-09 09:20:37,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 09:20:37,255 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-09 09:20:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:37,256 INFO L85 PathProgramCache]: Analyzing trace with hash -501483645, now seen corresponding path program 2 times [2021-11-09 09:20:37,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:37,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502152911] [2021-11-09 09:20:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:37,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:37,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:20:37,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365174114] [2021-11-09 09:20:37,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:20:37,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:37,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:37,276 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:37,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85529f7-3a51-41eb-b9dd-e266df00b25f/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process