./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G --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 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:58:01,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:58:01,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:58:01,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:58:01,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:58:01,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:58:01,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:58:01,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:58:01,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:58:01,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:58:01,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:58:01,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:58:01,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:58:01,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:58:01,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:58:01,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:58:01,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:58:01,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:58:01,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:58:01,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:58:01,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:58:01,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:58:01,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:58:01,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:58:01,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:58:01,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:58:01,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:58:01,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:58:01,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:58:01,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:58:01,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:58:01,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:58:01,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:58:01,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:58:01,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:58:01,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:58:01,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:58:01,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:58:01,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:58:01,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:58:01,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:58:01,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:58:01,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:58:01,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:58:01,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:58:01,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:58:01,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:58:01,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:58:01,287 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:58:01,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:58:01,287 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:58:01,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:58:01,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:58:01,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:58:01,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:58:01,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:58:01,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:58:01,290 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:58:01,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:58:01,291 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:58:01,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:58:01,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:58:01,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:58:01,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:58:01,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:58:01,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:58:01,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:58:01,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:58:01,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:58:01,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:58:01,294 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:58:01,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:58:01,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:58:01,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:58:01,297 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_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2021-11-23 12:58:01,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:58:01,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:58:01,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:58:01,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:58:01,648 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:58:01,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-23 12:58:01,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/data/b1023fb75/82e54cb9ddd547aa9fecc9ab510ca2f3/FLAG9f847fb42 [2021-11-23 12:58:02,509 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:58:02,510 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-23 12:58:02,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/data/b1023fb75/82e54cb9ddd547aa9fecc9ab510ca2f3/FLAG9f847fb42 [2021-11-23 12:58:03,072 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/data/b1023fb75/82e54cb9ddd547aa9fecc9ab510ca2f3 [2021-11-23 12:58:03,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:58:03,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:58:03,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:58:03,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:58:03,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:58:03,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:58:03" (1/1) ... [2021-11-23 12:58:03,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b893c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:03, skipping insertion in model container [2021-11-23 12:58:03,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:58:03" (1/1) ... [2021-11-23 12:58:03,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:58:03,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:58:03,774 WARN L230 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_5b595ac4-943e-4b34-a7c9-72603bca172c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-23 12:58:04,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:58:04,015 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:58:04,045 WARN L230 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_5b595ac4-943e-4b34-a7c9-72603bca172c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-23 12:58:04,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:58:04,341 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:58:04,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04 WrapperNode [2021-11-23 12:58:04,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:58:04,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:58:04,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:58:04,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:58:04,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (1/1) ... [2021-11-23 12:58:04,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (1/1) ... [2021-11-23 12:58:04,540 INFO L137 Inliner]: procedures = 177, calls = 575, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 2500 [2021-11-23 12:58:04,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:58:04,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:58:04,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:58:04,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:58:04,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (1/1) ... [2021-11-23 12:58:04,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (1/1) ... [2021-11-23 12:58:04,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (1/1) ... [2021-11-23 12:58:04,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (1/1) ... [2021-11-23 12:58:04,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (1/1) ... [2021-11-23 12:58:04,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (1/1) ... [2021-11-23 12:58:04,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (1/1) ... [2021-11-23 12:58:04,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:58:04,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:58:04,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:58:04,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:58:04,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (1/1) ... [2021-11-23 12:58:04,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:58:04,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:04,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:58:04,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:58:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:58:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:58:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:58:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:58:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:58:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:58:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 12:58:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:58:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:58:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:58:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:58:04,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:58:05,160 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:58:05,166 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:58:08,447 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:58:08,492 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:58:08,492 INFO L301 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-23 12:58:08,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:58:08 BoogieIcfgContainer [2021-11-23 12:58:08,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:58:08,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:58:08,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:58:08,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:58:08,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:58:03" (1/3) ... [2021-11-23 12:58:08,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd3df92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:58:08, skipping insertion in model container [2021-11-23 12:58:08,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:58:04" (2/3) ... [2021-11-23 12:58:08,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd3df92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:58:08, skipping insertion in model container [2021-11-23 12:58:08,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:58:08" (3/3) ... [2021-11-23 12:58:08,505 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-2.i [2021-11-23 12:58:08,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:58:08,516 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-23 12:58:08,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:58:08,608 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:58:08,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-23 12:58:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 515 states, 498 states have (on average 1.7188755020080322) internal successors, (856), 514 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:58:08,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:08,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:08,660 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:08,666 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-23 12:58:08,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:08,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333748555] [2021-11-23 12:58:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:08,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:08,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:08,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333748555] [2021-11-23 12:58:08,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333748555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:08,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:08,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:58:08,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176287022] [2021-11-23 12:58:08,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:08,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:58:08,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:08,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:58:08,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:58:08,871 INFO L87 Difference]: Start difference. First operand has 515 states, 498 states have (on average 1.7188755020080322) internal successors, (856), 514 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:08,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:08,947 INFO L93 Difference]: Finished difference Result 1028 states and 1710 transitions. [2021-11-23 12:58:08,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:58:08,950 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:58:08,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:08,975 INFO L225 Difference]: With dead ends: 1028 [2021-11-23 12:58:08,977 INFO L226 Difference]: Without dead ends: 477 [2021-11-23 12:58:08,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:58:08,994 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:08,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:58:09,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-23 12:58:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2021-11-23 12:58:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 461 states have (on average 1.3449023861171367) internal successors, (620), 476 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 620 transitions. [2021-11-23 12:58:09,114 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 620 transitions. Word has length 9 [2021-11-23 12:58:09,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:09,115 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 620 transitions. [2021-11-23 12:58:09,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 620 transitions. [2021-11-23 12:58:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 12:58:09,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:09,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:09,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:58:09,122 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-23 12:58:09,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:09,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825794656] [2021-11-23 12:58:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:09,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:09,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:09,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825794656] [2021-11-23 12:58:09,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825794656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:09,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:09,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:58:09,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307235557] [2021-11-23 12:58:09,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:09,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:58:09,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:09,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:58:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:58:09,312 INFO L87 Difference]: Start difference. First operand 477 states and 620 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:10,057 INFO L93 Difference]: Finished difference Result 855 states and 1111 transitions. [2021-11-23 12:58:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:58:10,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-23 12:58:10,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:10,061 INFO L225 Difference]: With dead ends: 855 [2021-11-23 12:58:10,062 INFO L226 Difference]: Without dead ends: 552 [2021-11-23 12:58:10,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:10,064 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 96 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:10,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1639 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 12:58:10,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-23 12:58:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 479. [2021-11-23 12:58:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.34341252699784) internal successors, (622), 478 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 622 transitions. [2021-11-23 12:58:10,083 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 622 transitions. Word has length 44 [2021-11-23 12:58:10,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:10,084 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 622 transitions. [2021-11-23 12:58:10,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 622 transitions. [2021-11-23 12:58:10,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 12:58:10,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:10,090 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:10,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:58:10,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-23 12:58:10,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:10,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354350925] [2021-11-23 12:58:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:10,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:10,125 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:10,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680111085] [2021-11-23 12:58:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:10,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:10,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:10,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:10,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:58:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:10,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:58:10,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:10,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:10,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:10,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354350925] [2021-11-23 12:58:10,773 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:10,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680111085] [2021-11-23 12:58:10,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680111085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:10,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:10,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:10,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465382100] [2021-11-23 12:58:10,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:10,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:10,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:10,777 INFO L87 Difference]: Start difference. First operand 479 states and 622 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:10,892 INFO L93 Difference]: Finished difference Result 975 states and 1271 transitions. [2021-11-23 12:58:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:10,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-23 12:58:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:10,896 INFO L225 Difference]: With dead ends: 975 [2021-11-23 12:58:10,896 INFO L226 Difference]: Without dead ends: 500 [2021-11-23 12:58:10,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:10,901 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 9 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:10,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1185 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-23 12:58:10,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 499. [2021-11-23 12:58:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 483 states have (on average 1.329192546583851) internal successors, (642), 498 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 642 transitions. [2021-11-23 12:58:10,921 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 642 transitions. Word has length 97 [2021-11-23 12:58:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:10,922 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 642 transitions. [2021-11-23 12:58:10,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:10,923 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 642 transitions. [2021-11-23 12:58:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 12:58:10,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:10,937 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:10,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:11,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:11,139 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:11,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:11,139 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-23 12:58:11,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:11,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798612131] [2021-11-23 12:58:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:11,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:11,165 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:11,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305339068] [2021-11-23 12:58:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:11,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:11,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:11,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:11,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:58:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:11,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:58:11,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:58:11,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:11,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:11,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798612131] [2021-11-23 12:58:11,672 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:11,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305339068] [2021-11-23 12:58:11,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305339068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:11,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:11,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:11,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567160769] [2021-11-23 12:58:11,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:11,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:11,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:11,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:11,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:11,685 INFO L87 Difference]: Start difference. First operand 499 states and 642 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:11,793 INFO L93 Difference]: Finished difference Result 811 states and 1048 transitions. [2021-11-23 12:58:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:11,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-23 12:58:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:11,798 INFO L225 Difference]: With dead ends: 811 [2021-11-23 12:58:11,799 INFO L226 Difference]: Without dead ends: 520 [2021-11-23 12:58:11,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:11,803 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 9 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:11,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1185 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:11,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-11-23 12:58:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 519. [2021-11-23 12:58:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 503 states have (on average 1.31610337972167) internal successors, (662), 518 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 662 transitions. [2021-11-23 12:58:11,826 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 662 transitions. Word has length 97 [2021-11-23 12:58:11,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:11,829 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 662 transitions. [2021-11-23 12:58:11,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 662 transitions. [2021-11-23 12:58:11,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 12:58:11,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:11,833 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:11,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:12,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:12,046 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:12,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-23 12:58:12,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:12,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29008307] [2021-11-23 12:58:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:12,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:12,071 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:12,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060898780] [2021-11-23 12:58:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:12,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:12,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:12,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:12,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:58:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:12,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:58:12,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:12,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:12,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:12,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29008307] [2021-11-23 12:58:12,610 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:12,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060898780] [2021-11-23 12:58:12,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060898780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:12,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:12,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:58:12,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173206961] [2021-11-23 12:58:12,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:12,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:58:12,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:12,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:58:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:58:12,613 INFO L87 Difference]: Start difference. First operand 519 states and 662 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:12,770 INFO L93 Difference]: Finished difference Result 1110 states and 1424 transitions. [2021-11-23 12:58:12,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:58:12,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-23 12:58:12,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:12,775 INFO L225 Difference]: With dead ends: 1110 [2021-11-23 12:58:12,790 INFO L226 Difference]: Without dead ends: 595 [2021-11-23 12:58:12,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:12,792 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 608 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:12,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1532 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:12,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-23 12:58:12,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 505. [2021-11-23 12:58:12,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 489 states have (on average 1.3108384458077709) internal successors, (641), 504 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 641 transitions. [2021-11-23 12:58:12,821 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 641 transitions. Word has length 97 [2021-11-23 12:58:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:12,821 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 641 transitions. [2021-11-23 12:58:12,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 641 transitions. [2021-11-23 12:58:12,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 12:58:12,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:12,823 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:12,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:13,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:13,046 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-23 12:58:13,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:13,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563094182] [2021-11-23 12:58:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:13,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:13,070 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:13,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850285753] [2021-11-23 12:58:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:13,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:13,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:13,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:13,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:58:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:13,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:58:13,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:58:13,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:13,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:13,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563094182] [2021-11-23 12:58:13,470 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:13,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850285753] [2021-11-23 12:58:13,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850285753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:13,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:13,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:58:13,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309052287] [2021-11-23 12:58:13,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:13,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:58:13,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:13,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:58:13,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:58:13,476 INFO L87 Difference]: Start difference. First operand 505 states and 641 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:13,571 INFO L93 Difference]: Finished difference Result 785 states and 996 transitions. [2021-11-23 12:58:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:58:13,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-23 12:58:13,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:13,577 INFO L225 Difference]: With dead ends: 785 [2021-11-23 12:58:13,578 INFO L226 Difference]: Without dead ends: 492 [2021-11-23 12:58:13,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:13,580 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 377 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:13,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 1386 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:13,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-23 12:58:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2021-11-23 12:58:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 475 states have (on average 1.305263157894737) internal successors, (620), 490 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 620 transitions. [2021-11-23 12:58:13,597 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 620 transitions. Word has length 97 [2021-11-23 12:58:13,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:13,599 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 620 transitions. [2021-11-23 12:58:13,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:13,599 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 620 transitions. [2021-11-23 12:58:13,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 12:58:13,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:13,601 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:13,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:13,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 12:58:13,823 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-23 12:58:13,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:13,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074187990] [2021-11-23 12:58:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:13,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:13,836 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:13,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449814615] [2021-11-23 12:58:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:13,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:13,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:13,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:13,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 12:58:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:14,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:58:14,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:14,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:14,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:14,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074187990] [2021-11-23 12:58:14,450 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:14,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449814615] [2021-11-23 12:58:14,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449814615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:14,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:14,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:14,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815223381] [2021-11-23 12:58:14,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:14,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:14,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:14,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:14,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:14,453 INFO L87 Difference]: Start difference. First operand 491 states and 620 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:14,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:14,558 INFO L93 Difference]: Finished difference Result 1263 states and 1594 transitions. [2021-11-23 12:58:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:14,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-23 12:58:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:14,564 INFO L225 Difference]: With dead ends: 1263 [2021-11-23 12:58:14,564 INFO L226 Difference]: Without dead ends: 776 [2021-11-23 12:58:14,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:14,567 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 325 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:14,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1183 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:14,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-23 12:58:14,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 741. [2021-11-23 12:58:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 725 states have (on average 1.3103448275862069) internal successors, (950), 740 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 950 transitions. [2021-11-23 12:58:14,597 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 950 transitions. Word has length 97 [2021-11-23 12:58:14,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:14,598 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 950 transitions. [2021-11-23 12:58:14,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 950 transitions. [2021-11-23 12:58:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 12:58:14,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:14,600 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:14,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:14,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 12:58:14,812 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:14,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:14,812 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-23 12:58:14,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:14,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958441109] [2021-11-23 12:58:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:14,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:14,833 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:14,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720249176] [2021-11-23 12:58:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:14,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:14,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:14,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:14,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 12:58:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:15,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:58:15,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:15,121 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 [2021-11-23 12:58:15,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-23 12:58:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:15,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:15,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:15,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958441109] [2021-11-23 12:58:15,412 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:15,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720249176] [2021-11-23 12:58:15,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720249176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:15,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:15,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:58:15,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723033624] [2021-11-23 12:58:15,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:15,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:58:15,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:15,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:58:15,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:15,415 INFO L87 Difference]: Start difference. First operand 741 states and 950 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:16,732 INFO L93 Difference]: Finished difference Result 1394 states and 1785 transitions. [2021-11-23 12:58:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:58:16,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-23 12:58:16,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:16,738 INFO L225 Difference]: With dead ends: 1394 [2021-11-23 12:58:16,738 INFO L226 Difference]: Without dead ends: 743 [2021-11-23 12:58:16,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:58:16,741 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 98 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:16,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 2063 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 12:58:16,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-11-23 12:58:16,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 741. [2021-11-23 12:58:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 725 states have (on average 1.3089655172413792) internal successors, (949), 740 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 949 transitions. [2021-11-23 12:58:16,771 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 949 transitions. Word has length 104 [2021-11-23 12:58:16,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:16,772 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 949 transitions. [2021-11-23 12:58:16,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 949 transitions. [2021-11-23 12:58:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 12:58:16,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:16,774 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:16,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:16,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:16,991 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -560944154, now seen corresponding path program 1 times [2021-11-23 12:58:16,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:16,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296424373] [2021-11-23 12:58:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:16,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:17,011 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:17,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92160548] [2021-11-23 12:58:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:17,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:17,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:17,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:17,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 12:58:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:17,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:58:17,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:17,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:17,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:17,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296424373] [2021-11-23 12:58:17,555 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92160548] [2021-11-23 12:58:17,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92160548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:17,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:17,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:17,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179158154] [2021-11-23 12:58:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:17,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:17,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:17,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:17,558 INFO L87 Difference]: Start difference. First operand 741 states and 949 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:17,652 INFO L93 Difference]: Finished difference Result 1506 states and 1939 transitions. [2021-11-23 12:58:17,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:17,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-23 12:58:17,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:17,660 INFO L225 Difference]: With dead ends: 1506 [2021-11-23 12:58:17,660 INFO L226 Difference]: Without dead ends: 783 [2021-11-23 12:58:17,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:17,666 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 9 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:17,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1157 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:17,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-23 12:58:17,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 781. [2021-11-23 12:58:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.29281045751634) internal successors, (989), 780 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 989 transitions. [2021-11-23 12:58:17,695 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 989 transitions. Word has length 151 [2021-11-23 12:58:17,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:17,696 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 989 transitions. [2021-11-23 12:58:17,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:17,696 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 989 transitions. [2021-11-23 12:58:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 12:58:17,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:17,699 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:17,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:17,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:17,915 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:17,916 INFO L85 PathProgramCache]: Analyzing trace with hash 145652452, now seen corresponding path program 1 times [2021-11-23 12:58:17,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:17,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516766147] [2021-11-23 12:58:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:17,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:17,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:17,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693327292] [2021-11-23 12:58:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:17,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:17,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:17,952 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:17,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 12:58:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:18,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:58:18,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:18,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:18,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:18,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516766147] [2021-11-23 12:58:18,487 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:18,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693327292] [2021-11-23 12:58:18,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693327292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:18,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:18,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:58:18,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438883662] [2021-11-23 12:58:18,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:18,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:58:18,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:58:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:58:18,490 INFO L87 Difference]: Start difference. First operand 781 states and 989 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:18,595 INFO L93 Difference]: Finished difference Result 1500 states and 1904 transitions. [2021-11-23 12:58:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:58:18,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-23 12:58:18,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:18,600 INFO L225 Difference]: With dead ends: 1500 [2021-11-23 12:58:18,601 INFO L226 Difference]: Without dead ends: 755 [2021-11-23 12:58:18,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:18,603 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 594 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:18,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1171 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-11-23 12:58:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 753. [2021-11-23 12:58:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 737 states have (on average 1.2849389416553596) internal successors, (947), 752 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:18,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 947 transitions. [2021-11-23 12:58:18,630 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 947 transitions. Word has length 151 [2021-11-23 12:58:18,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:18,631 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 947 transitions. [2021-11-23 12:58:18,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:18,632 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 947 transitions. [2021-11-23 12:58:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 12:58:18,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:18,634 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:18,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:18,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 12:58:18,859 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:18,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1850791156, now seen corresponding path program 1 times [2021-11-23 12:58:18,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:18,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721139210] [2021-11-23 12:58:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:18,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:18,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:18,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186534880] [2021-11-23 12:58:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:18,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:18,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:18,888 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:18,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 12:58:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:19,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:58:19,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:19,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:19,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:19,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721139210] [2021-11-23 12:58:19,409 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:19,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186534880] [2021-11-23 12:58:19,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186534880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:19,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:19,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:58:19,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535350578] [2021-11-23 12:58:19,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:19,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:58:19,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:58:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:19,412 INFO L87 Difference]: Start difference. First operand 753 states and 947 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:19,574 INFO L93 Difference]: Finished difference Result 2215 states and 2792 transitions. [2021-11-23 12:58:19,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:58:19,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-23 12:58:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:19,583 INFO L225 Difference]: With dead ends: 2215 [2021-11-23 12:58:19,583 INFO L226 Difference]: Without dead ends: 1500 [2021-11-23 12:58:19,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:19,585 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 586 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:19,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 1750 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-11-23 12:58:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 799. [2021-11-23 12:58:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 783 states have (on average 1.2733077905491699) internal successors, (997), 798 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 997 transitions. [2021-11-23 12:58:19,622 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 997 transitions. Word has length 151 [2021-11-23 12:58:19,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:19,622 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 997 transitions. [2021-11-23 12:58:19,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 997 transitions. [2021-11-23 12:58:19,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 12:58:19,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:19,625 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:19,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:19,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:19,840 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:19,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:19,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1918499578, now seen corresponding path program 1 times [2021-11-23 12:58:19,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:19,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794009108] [2021-11-23 12:58:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:19,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:19,887 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:19,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722831003] [2021-11-23 12:58:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:19,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:19,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:19,903 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:19,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 12:58:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:20,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:58:20,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:20,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:20,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:20,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794009108] [2021-11-23 12:58:20,496 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:20,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722831003] [2021-11-23 12:58:20,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722831003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:20,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:20,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:58:20,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599188923] [2021-11-23 12:58:20,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:20,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:58:20,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:20,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:58:20,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:58:20,499 INFO L87 Difference]: Start difference. First operand 799 states and 997 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:20,580 INFO L93 Difference]: Finished difference Result 1507 states and 1891 transitions. [2021-11-23 12:58:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:58:20,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-23 12:58:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:20,585 INFO L225 Difference]: With dead ends: 1507 [2021-11-23 12:58:20,586 INFO L226 Difference]: Without dead ends: 735 [2021-11-23 12:58:20,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:20,589 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 574 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:20,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 1165 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:58:20,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-23 12:58:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2021-11-23 12:58:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 719 states have (on average 1.278164116828929) internal successors, (919), 734 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 919 transitions. [2021-11-23 12:58:20,617 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 919 transitions. Word has length 151 [2021-11-23 12:58:20,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:20,618 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 919 transitions. [2021-11-23 12:58:20,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 919 transitions. [2021-11-23 12:58:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 12:58:20,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:20,620 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:20,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:20,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 12:58:20,847 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:20,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:20,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1737579534, now seen corresponding path program 1 times [2021-11-23 12:58:20,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:20,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822972169] [2021-11-23 12:58:20,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:20,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:20,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:20,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656410518] [2021-11-23 12:58:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:20,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:20,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:20,878 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:20,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 12:58:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:21,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:58:21,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:21,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:21,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:21,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822972169] [2021-11-23 12:58:21,569 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:21,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656410518] [2021-11-23 12:58:21,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656410518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:21,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:21,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:21,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837671485] [2021-11-23 12:58:21,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:21,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:21,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:21,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:21,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:21,572 INFO L87 Difference]: Start difference. First operand 735 states and 919 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:21,695 INFO L93 Difference]: Finished difference Result 1759 states and 2227 transitions. [2021-11-23 12:58:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:21,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-23 12:58:21,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:21,704 INFO L225 Difference]: With dead ends: 1759 [2021-11-23 12:58:21,704 INFO L226 Difference]: Without dead ends: 1073 [2021-11-23 12:58:21,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:21,707 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 306 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:21,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 1153 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:21,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-11-23 12:58:21,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 908. [2021-11-23 12:58:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 892 states have (on average 1.298206278026906) internal successors, (1158), 907 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:21,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1158 transitions. [2021-11-23 12:58:21,767 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1158 transitions. Word has length 151 [2021-11-23 12:58:21,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:21,767 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1158 transitions. [2021-11-23 12:58:21,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1158 transitions. [2021-11-23 12:58:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-23 12:58:21,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:21,772 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:21,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:21,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 12:58:21,987 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:21,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:21,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1603750718, now seen corresponding path program 1 times [2021-11-23 12:58:21,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:21,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830049355] [2021-11-23 12:58:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:21,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:22,003 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:22,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088391864] [2021-11-23 12:58:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:22,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:22,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:22,007 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:22,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 12:58:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:22,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:58:22,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:22,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:22,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:22,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830049355] [2021-11-23 12:58:22,652 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:22,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088391864] [2021-11-23 12:58:22,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088391864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:22,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:22,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:58:22,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997995195] [2021-11-23 12:58:22,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:22,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:58:22,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:22,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:58:22,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:58:22,654 INFO L87 Difference]: Start difference. First operand 908 states and 1158 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:23,268 INFO L93 Difference]: Finished difference Result 1505 states and 1917 transitions. [2021-11-23 12:58:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:58:23,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-23 12:58:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:23,274 INFO L225 Difference]: With dead ends: 1505 [2021-11-23 12:58:23,274 INFO L226 Difference]: Without dead ends: 724 [2021-11-23 12:58:23,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:23,276 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1015 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:23,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 601 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 12:58:23,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-23 12:58:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2021-11-23 12:58:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 708 states have (on average 1.2725988700564972) internal successors, (901), 723 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 901 transitions. [2021-11-23 12:58:23,304 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 901 transitions. Word has length 158 [2021-11-23 12:58:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:23,305 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 901 transitions. [2021-11-23 12:58:23,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 901 transitions. [2021-11-23 12:58:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 12:58:23,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:23,308 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:23,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:23,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 12:58:23,523 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:23,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:23,523 INFO L85 PathProgramCache]: Analyzing trace with hash -881822645, now seen corresponding path program 1 times [2021-11-23 12:58:23,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:23,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338397575] [2021-11-23 12:58:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:23,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:23,538 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:23,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568737761] [2021-11-23 12:58:23,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:23,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:23,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:23,540 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:23,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 12:58:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:24,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:58:24,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:58:24,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:58:24,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:24,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338397575] [2021-11-23 12:58:24,367 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:24,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568737761] [2021-11-23 12:58:24,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568737761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:58:24,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:58:24,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:58:24,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761202566] [2021-11-23 12:58:24,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:24,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:24,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:24,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:24,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:24,368 INFO L87 Difference]: Start difference. First operand 724 states and 901 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:24,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:24,435 INFO L93 Difference]: Finished difference Result 1407 states and 1762 transitions. [2021-11-23 12:58:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:24,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-23 12:58:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:24,440 INFO L225 Difference]: With dead ends: 1407 [2021-11-23 12:58:24,441 INFO L226 Difference]: Without dead ends: 726 [2021-11-23 12:58:24,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:58:24,445 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 0 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:24,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1158 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:58:24,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-11-23 12:58:24,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2021-11-23 12:58:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 710 states have (on average 1.271830985915493) internal successors, (903), 725 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 903 transitions. [2021-11-23 12:58:24,506 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 903 transitions. Word has length 165 [2021-11-23 12:58:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:24,507 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 903 transitions. [2021-11-23 12:58:24,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 903 transitions. [2021-11-23 12:58:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-23 12:58:24,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:24,510 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:24,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:24,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:24,735 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:24,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:24,736 INFO L85 PathProgramCache]: Analyzing trace with hash 797655390, now seen corresponding path program 1 times [2021-11-23 12:58:24,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:24,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112494145] [2021-11-23 12:58:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:24,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:24,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:24,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199663609] [2021-11-23 12:58:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:24,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:24,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:24,762 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:24,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-23 12:58:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:25,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 12:58:25,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:58:25,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:58:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:58:26,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:26,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112494145] [2021-11-23 12:58:26,012 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:26,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199663609] [2021-11-23 12:58:26,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199663609] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 12:58:26,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:58:26,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 12:58:26,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234504256] [2021-11-23 12:58:26,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:58:26,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:58:26,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:26,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:58:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:26,017 INFO L87 Difference]: Start difference. First operand 726 states and 903 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:26,081 INFO L93 Difference]: Finished difference Result 1407 states and 1761 transitions. [2021-11-23 12:58:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:58:26,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-11-23 12:58:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:26,086 INFO L225 Difference]: With dead ends: 1407 [2021-11-23 12:58:26,087 INFO L226 Difference]: Without dead ends: 728 [2021-11-23 12:58:26,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:58:26,089 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 0 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:26,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1156 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:58:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-23 12:58:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2021-11-23 12:58:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 712 states have (on average 1.271067415730337) internal successors, (905), 727 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 905 transitions. [2021-11-23 12:58:26,127 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 905 transitions. Word has length 167 [2021-11-23 12:58:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:26,127 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 905 transitions. [2021-11-23 12:58:26,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:26,128 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 905 transitions. [2021-11-23 12:58:26,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-23 12:58:26,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:26,131 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:26,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:26,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:26,359 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:26,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:26,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1308439913, now seen corresponding path program 1 times [2021-11-23 12:58:26,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:26,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339189683] [2021-11-23 12:58:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:26,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:26,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:26,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562193932] [2021-11-23 12:58:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:26,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:26,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:26,382 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:26,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 12:58:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:58:27,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 12:58:27,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:58:27,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:58:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 12:58:27,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:27,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339189683] [2021-11-23 12:58:27,644 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:27,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562193932] [2021-11-23 12:58:27,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562193932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:58:27,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:58:27,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-11-23 12:58:27,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351977662] [2021-11-23 12:58:27,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:58:27,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:58:27,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:58:27,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:58:27,649 INFO L87 Difference]: Start difference. First operand 728 states and 905 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:27,867 INFO L93 Difference]: Finished difference Result 2078 states and 2609 transitions. [2021-11-23 12:58:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:58:27,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-23 12:58:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:27,875 INFO L225 Difference]: With dead ends: 2078 [2021-11-23 12:58:27,875 INFO L226 Difference]: Without dead ends: 1394 [2021-11-23 12:58:27,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:58:27,878 INFO L933 BasicCegarLoop]: 1085 mSDtfsCounter, 561 mSDsluCounter, 3787 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 4872 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:27,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 4872 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:58:27,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-23 12:58:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 736. [2021-11-23 12:58:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 720 states have (on average 1.2680555555555555) internal successors, (913), 735 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 913 transitions. [2021-11-23 12:58:27,916 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 913 transitions. Word has length 169 [2021-11-23 12:58:27,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:27,916 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 913 transitions. [2021-11-23 12:58:27,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 913 transitions. [2021-11-23 12:58:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-23 12:58:27,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:27,920 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:27,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:28,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 12:58:28,137 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:28,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:28,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1200882837, now seen corresponding path program 2 times [2021-11-23 12:58:28,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:28,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111188051] [2021-11-23 12:58:28,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:28,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:28,171 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:28,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828375063] [2021-11-23 12:58:28,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:58:28,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:28,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:28,173 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:28,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 12:58:30,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:58:30,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:58:30,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 12:58:30,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 12:58:30,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:58:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 12:58:31,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:58:31,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111188051] [2021-11-23 12:58:31,530 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:58:31,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828375063] [2021-11-23 12:58:31,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828375063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:58:31,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:58:31,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2021-11-23 12:58:31,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040376919] [2021-11-23 12:58:31,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:58:31,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 12:58:31,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:58:31,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 12:58:31,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:58:31,532 INFO L87 Difference]: Start difference. First operand 736 states and 913 transitions. Second operand has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:33,351 INFO L93 Difference]: Finished difference Result 2115 states and 2668 transitions. [2021-11-23 12:58:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 12:58:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-11-23 12:58:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:33,360 INFO L225 Difference]: With dead ends: 2115 [2021-11-23 12:58:33,360 INFO L226 Difference]: Without dead ends: 1424 [2021-11-23 12:58:33,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:58:33,363 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 2308 mSDsluCounter, 9042 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 10162 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:33,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2308 Valid, 10162 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 12:58:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-11-23 12:58:33,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 769. [2021-11-23 12:58:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 753 states have (on average 1.2602921646746348) internal successors, (949), 768 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 949 transitions. [2021-11-23 12:58:33,406 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 949 transitions. Word has length 177 [2021-11-23 12:58:33,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:33,407 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 949 transitions. [2021-11-23 12:58:33,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:33,407 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 949 transitions. [2021-11-23 12:58:33,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-23 12:58:33,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:33,410 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:33,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:33,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-23 12:58:33,637 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-23 12:58:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1993521346, now seen corresponding path program 3 times [2021-11-23 12:58:33,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:58:33,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079578795] [2021-11-23 12:58:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:58:33,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:58:33,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:58:33,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583743482] [2021-11-23 12:58:33,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:58:33,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:58:33,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:58:33,662 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:58:33,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b595ac4-943e-4b34-a7c9-72603bca172c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process