./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro --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 d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 --- Real Ultimate output --- [0.002s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:04:13,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:04:13,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:04:13,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:04:13,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:04:13,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:04:13,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:04:13,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:04:13,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:04:13,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:04:13,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:04:13,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:04:13,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:04:13,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:04:13,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:04:13,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:04:13,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:04:13,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:04:13,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:04:13,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:04:13,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:04:13,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:04:13,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:04:13,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:04:13,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:04:13,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:04:13,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:04:13,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:04:13,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:04:13,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:04:13,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:04:13,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:04:13,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:04:13,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:04:13,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:04:13,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:04:13,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:04:13,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:04:13,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:04:13,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:04:13,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:04:13,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:04:13,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:04:13,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:04:13,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:04:13,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:04:13,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:04:13,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:04:13,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:04:13,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:04:13,292 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:04:13,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:04:13,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:04:13,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:04:13,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:04:13,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:04:13,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:04:13,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:04:13,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:04:13,295 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:04:13,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:04:13,296 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:04:13,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:04:13,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:04:13,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:04:13,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:04:13,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:04:13,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:04:13,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:04:13,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:04:13,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:04:13,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:04:13,300 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:04:13,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:04:13,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:04:13,300 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_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 [2022-11-18 21:04:13,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:04:13,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:04:13,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:04:13,722 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:04:13,727 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:04:13,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2022-11-18 21:04:13,848 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/data/7a590ad75/aa5c051674b14d818f6bcf10f6bfb33d/FLAGbcec1b850 [2022-11-18 21:04:14,750 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:04:14,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2022-11-18 21:04:14,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/data/7a590ad75/aa5c051674b14d818f6bcf10f6bfb33d/FLAGbcec1b850 [2022-11-18 21:04:15,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/data/7a590ad75/aa5c051674b14d818f6bcf10f6bfb33d [2022-11-18 21:04:15,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:04:15,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:04:15,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:04:15,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:04:15,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:04:15,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:04:15" (1/1) ... [2022-11-18 21:04:15,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ce33b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:15, skipping insertion in model container [2022-11-18 21:04:15,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:04:15" (1/1) ... [2022-11-18 21:04:15,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:04:15,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:04:16,141 WARN L234 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_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-11-18 21:04:16,501 WARN L234 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_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-11-18 21:04:16,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:04:16,545 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:04:16,577 WARN L234 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_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-11-18 21:04:16,763 WARN L234 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_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-11-18 21:04:16,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:04:16,813 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:04:16,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16 WrapperNode [2022-11-18 21:04:16,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:04:16,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:04:16,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:04:16,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:04:16,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:16,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:17,028 INFO L138 Inliner]: procedures = 177, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3015 [2022-11-18 21:04:17,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:04:17,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:04:17,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:04:17,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:04:17,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:17,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:17,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:17,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:17,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:17,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:17,248 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:17,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:17,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:04:17,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:04:17,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:04:17,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:04:17,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (1/1) ... [2022-11-18 21:04:17,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:04:17,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:17,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:04:17,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:04:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:04:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 21:04:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 21:04:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:04:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 21:04:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 21:04:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:04:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:04:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 21:04:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:04:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-18 21:04:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 21:04:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:04:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:04:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:04:17,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:04:17,683 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:04:17,694 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:04:21,799 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:04:21,827 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:04:21,827 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-18 21:04:21,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:04:21 BoogieIcfgContainer [2022-11-18 21:04:21,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:04:21,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:04:21,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:04:21,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:04:21,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:04:15" (1/3) ... [2022-11-18 21:04:21,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39991f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:04:21, skipping insertion in model container [2022-11-18 21:04:21,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:16" (2/3) ... [2022-11-18 21:04:21,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39991f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:04:21, skipping insertion in model container [2022-11-18 21:04:21,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:04:21" (3/3) ... [2022-11-18 21:04:21,846 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-2.i [2022-11-18 21:04:21,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:04:21,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 21:04:21,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:04:21,993 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@159abb4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:04:21,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 21:04:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 1194 states, 686 states have (on average 1.91399416909621) internal successors, (1313), 1188 states have internal predecessors, (1313), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-18 21:04:22,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 21:04:22,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:22,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:22,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:22,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:22,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1311560150, now seen corresponding path program 1 times [2022-11-18 21:04:22,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:22,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159715916] [2022-11-18 21:04:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:22,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:22,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:22,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159715916] [2022-11-18 21:04:22,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159715916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:22,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:22,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:04:22,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417252267] [2022-11-18 21:04:22,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:22,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 21:04:22,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:22,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 21:04:22,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:04:22,341 INFO L87 Difference]: Start difference. First operand has 1194 states, 686 states have (on average 1.91399416909621) internal successors, (1313), 1188 states have internal predecessors, (1313), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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) [2022-11-18 21:04:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:22,655 INFO L93 Difference]: Finished difference Result 2386 states and 5136 transitions. [2022-11-18 21:04:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 21:04:22,658 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 [2022-11-18 21:04:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:22,697 INFO L225 Difference]: With dead ends: 2386 [2022-11-18 21:04:22,697 INFO L226 Difference]: Without dead ends: 1161 [2022-11-18 21:04:22,714 INFO L412 NwaCegarLoop]: 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 [2022-11-18 21:04:22,718 INFO L413 NwaCegarLoop]: 2250 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, 2250 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 [2022-11-18 21:04:22,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:04:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-11-18 21:04:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2022-11-18 21:04:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 654 states have (on average 1.834862385321101) internal successors, (1200), 1155 states have internal predecessors, (1200), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-18 21:04:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 2206 transitions. [2022-11-18 21:04:23,407 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 2206 transitions. Word has length 9 [2022-11-18 21:04:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:23,409 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 2206 transitions. [2022-11-18 21:04:23,410 INFO L496 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) [2022-11-18 21:04:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 2206 transitions. [2022-11-18 21:04:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 21:04:23,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:23,413 INFO L195 NwaCegarLoop]: 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] [2022-11-18 21:04:23,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:04:23,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1831599231, now seen corresponding path program 1 times [2022-11-18 21:04:23,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:23,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214296200] [2022-11-18 21:04:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:23,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:24,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214296200] [2022-11-18 21:04:24,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214296200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:24,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:24,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:04:24,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467255250] [2022-11-18 21:04:24,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:24,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:04:24,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:24,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:04:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:04:24,203 INFO L87 Difference]: Start difference. First operand 1161 states and 2206 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) [2022-11-18 21:04:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:26,256 INFO L93 Difference]: Finished difference Result 3331 states and 6426 transitions. [2022-11-18 21:04:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:04:26,258 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 [2022-11-18 21:04:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:26,288 INFO L225 Difference]: With dead ends: 3331 [2022-11-18 21:04:26,289 INFO L226 Difference]: Without dead ends: 2262 [2022-11-18 21:04:26,305 INFO L412 NwaCegarLoop]: 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 [2022-11-18 21:04:26,312 INFO L413 NwaCegarLoop]: 2669 mSDtfsCounter, 1129 mSDsluCounter, 4306 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 6975 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:26,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 6975 Invalid, 643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 21:04:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-11-18 21:04:26,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1163. [2022-11-18 21:04:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 656 states have (on average 1.8323170731707317) internal successors, (1202), 1157 states have internal predecessors, (1202), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-18 21:04:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2208 transitions. [2022-11-18 21:04:26,942 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2208 transitions. Word has length 44 [2022-11-18 21:04:26,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:26,943 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 2208 transitions. [2022-11-18 21:04:26,943 INFO L496 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) [2022-11-18 21:04:26,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2208 transitions. [2022-11-18 21:04:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-18 21:04:26,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:26,963 INFO L195 NwaCegarLoop]: 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] [2022-11-18 21:04:26,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:04:26,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1300600525, now seen corresponding path program 1 times [2022-11-18 21:04:26,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:26,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554049922] [2022-11-18 21:04:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:26,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:27,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:27,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353466700] [2022-11-18 21:04:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:27,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:27,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:27,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:27,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:04:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:04:28,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:28,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:28,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:28,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554049922] [2022-11-18 21:04:28,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:28,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353466700] [2022-11-18 21:04:28,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353466700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:28,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:28,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:04:28,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168338158] [2022-11-18 21:04:28,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:28,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:04:28,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:28,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:04:28,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:04:28,230 INFO L87 Difference]: Start difference. First operand 1163 states and 2208 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) [2022-11-18 21:04:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:28,415 INFO L93 Difference]: Finished difference Result 2343 states and 4443 transitions. [2022-11-18 21:04:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:04:28,416 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 96 [2022-11-18 21:04:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:28,427 INFO L225 Difference]: With dead ends: 2343 [2022-11-18 21:04:28,427 INFO L226 Difference]: Without dead ends: 1184 [2022-11-18 21:04:28,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:04:28,437 INFO L413 NwaCegarLoop]: 2186 mSDtfsCounter, 9 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4357 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 [2022-11-18 21:04:28,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4357 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:04:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-11-18 21:04:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1183. [2022-11-18 21:04:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 676 states have (on average 1.8076923076923077) internal successors, (1222), 1177 states have internal predecessors, (1222), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-18 21:04:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2228 transitions. [2022-11-18 21:04:28,681 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2228 transitions. Word has length 96 [2022-11-18 21:04:28,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:28,682 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 2228 transitions. [2022-11-18 21:04:28,683 INFO L496 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) [2022-11-18 21:04:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2228 transitions. [2022-11-18 21:04:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-18 21:04:28,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:28,697 INFO L195 NwaCegarLoop]: 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] [2022-11-18 21:04:28,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:28,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:28,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1273534923, now seen corresponding path program 1 times [2022-11-18 21:04:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:28,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705151800] [2022-11-18 21:04:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:28,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:29,092 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:29,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035755547] [2022-11-18 21:04:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:29,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:29,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:29,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:29,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:04:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:30,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:04:30,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:04:30,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:30,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:30,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705151800] [2022-11-18 21:04:30,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:30,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035755547] [2022-11-18 21:04:30,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035755547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:30,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:30,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:04:30,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147595654] [2022-11-18 21:04:30,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:30,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:04:30,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:30,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:04:30,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:04:30,271 INFO L87 Difference]: Start difference. First operand 1183 states and 2228 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:30,485 INFO L93 Difference]: Finished difference Result 2272 states and 4345 transitions. [2022-11-18 21:04:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:04:30,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 96 [2022-11-18 21:04:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:30,498 INFO L225 Difference]: With dead ends: 2272 [2022-11-18 21:04:30,498 INFO L226 Difference]: Without dead ends: 1204 [2022-11-18 21:04:30,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:04:30,509 INFO L413 NwaCegarLoop]: 2186 mSDtfsCounter, 10 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4357 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 [2022-11-18 21:04:30,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4357 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:04:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-11-18 21:04:30,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1203. [2022-11-18 21:04:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 696 states have (on average 1.7844827586206897) internal successors, (1242), 1197 states have internal predecessors, (1242), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-18 21:04:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 2248 transitions. [2022-11-18 21:04:30,759 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 2248 transitions. Word has length 96 [2022-11-18 21:04:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:30,761 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 2248 transitions. [2022-11-18 21:04:30,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:30,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 2248 transitions. [2022-11-18 21:04:30,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-18 21:04:30,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:30,767 INFO L195 NwaCegarLoop]: 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] [2022-11-18 21:04:30,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:30,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:30,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:30,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:30,993 INFO L85 PathProgramCache]: Analyzing trace with hash 992737231, now seen corresponding path program 1 times [2022-11-18 21:04:30,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:30,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50355646] [2022-11-18 21:04:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:30,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:31,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:31,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864616583] [2022-11-18 21:04:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:31,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:31,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:31,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:31,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:04:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:32,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:04:32,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:32,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:32,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50355646] [2022-11-18 21:04:32,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864616583] [2022-11-18 21:04:32,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864616583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:32,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:32,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:04:32,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685151706] [2022-11-18 21:04:32,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:32,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:04:32,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:04:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:04:32,447 INFO L87 Difference]: Start difference. First operand 1203 states and 2248 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) [2022-11-18 21:04:32,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:32,662 INFO L93 Difference]: Finished difference Result 2394 states and 4484 transitions. [2022-11-18 21:04:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:04:32,663 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 96 [2022-11-18 21:04:32,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:32,673 INFO L225 Difference]: With dead ends: 2394 [2022-11-18 21:04:32,673 INFO L226 Difference]: Without dead ends: 1195 [2022-11-18 21:04:32,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:04:32,684 INFO L413 NwaCegarLoop]: 2186 mSDtfsCounter, 1186 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 4880 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:32,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 4880 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:04:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-11-18 21:04:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1189. [2022-11-18 21:04:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 682 states have (on average 1.7903225806451613) internal successors, (1221), 1183 states have internal predecessors, (1221), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-18 21:04:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 2227 transitions. [2022-11-18 21:04:32,904 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 2227 transitions. Word has length 96 [2022-11-18 21:04:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:32,905 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 2227 transitions. [2022-11-18 21:04:32,905 INFO L496 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) [2022-11-18 21:04:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 2227 transitions. [2022-11-18 21:04:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-18 21:04:32,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:32,908 INFO L195 NwaCegarLoop]: 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] [2022-11-18 21:04:32,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:33,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:33,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:33,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:33,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1068361891, now seen corresponding path program 1 times [2022-11-18 21:04:33,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:33,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623395525] [2022-11-18 21:04:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:33,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:33,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:33,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270558807] [2022-11-18 21:04:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:33,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:33,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:33,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:33,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:04:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:34,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:04:34,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:04:34,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:34,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:34,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623395525] [2022-11-18 21:04:34,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:34,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270558807] [2022-11-18 21:04:34,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270558807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:34,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:34,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:04:34,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994899466] [2022-11-18 21:04:34,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:34,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:04:34,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:04:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:04:34,603 INFO L87 Difference]: Start difference. First operand 1189 states and 2227 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:34,823 INFO L93 Difference]: Finished difference Result 2269 states and 4325 transitions. [2022-11-18 21:04:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:04:34,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 96 [2022-11-18 21:04:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:34,834 INFO L225 Difference]: With dead ends: 2269 [2022-11-18 21:04:34,834 INFO L226 Difference]: Without dead ends: 1181 [2022-11-18 21:04:34,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:04:34,843 INFO L413 NwaCegarLoop]: 2177 mSDtfsCounter, 1078 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 4964 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:34,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 4964 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:04:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-18 21:04:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1175. [2022-11-18 21:04:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 668 states have (on average 1.7964071856287425) internal successors, (1200), 1169 states have internal predecessors, (1200), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-18 21:04:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2206 transitions. [2022-11-18 21:04:35,123 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2206 transitions. Word has length 96 [2022-11-18 21:04:35,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:35,126 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 2206 transitions. [2022-11-18 21:04:35,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2206 transitions. [2022-11-18 21:04:35,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-18 21:04:35,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:35,129 INFO L195 NwaCegarLoop]: 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] [2022-11-18 21:04:35,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 21:04:35,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 21:04:35,347 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:35,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:35,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1951210737, now seen corresponding path program 1 times [2022-11-18 21:04:35,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:35,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808988821] [2022-11-18 21:04:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:35,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:35,499 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:35,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165970575] [2022-11-18 21:04:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:35,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:35,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:35,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:35,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:04:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:36,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:04:36,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:37,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:37,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:37,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808988821] [2022-11-18 21:04:37,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:37,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165970575] [2022-11-18 21:04:37,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165970575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:37,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:37,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:04:37,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939879451] [2022-11-18 21:04:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:37,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:04:37,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:37,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:04:37,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:04:37,237 INFO L87 Difference]: Start difference. First operand 1175 states and 2206 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) [2022-11-18 21:04:37,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:37,556 INFO L93 Difference]: Finished difference Result 3442 states and 6516 transitions. [2022-11-18 21:04:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:04:37,557 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 96 [2022-11-18 21:04:37,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:37,579 INFO L225 Difference]: With dead ends: 3442 [2022-11-18 21:04:37,579 INFO L226 Difference]: Without dead ends: 2271 [2022-11-18 21:04:37,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:04:37,590 INFO L413 NwaCegarLoop]: 2733 mSDtfsCounter, 1065 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 4903 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:37,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 4903 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:04:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2022-11-18 21:04:38,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2269. [2022-11-18 21:04:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 1262 states have (on average 1.8264659270998416) internal successors, (2305), 2263 states have internal predecessors, (2305), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-18 21:04:38,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 4311 transitions. [2022-11-18 21:04:38,322 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 4311 transitions. Word has length 96 [2022-11-18 21:04:38,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:38,322 INFO L495 AbstractCegarLoop]: Abstraction has 2269 states and 4311 transitions. [2022-11-18 21:04:38,323 INFO L496 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) [2022-11-18 21:04:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 4311 transitions. [2022-11-18 21:04:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-18 21:04:38,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:38,326 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-11-18 21:04:38,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:38,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:38,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash -295073475, now seen corresponding path program 1 times [2022-11-18 21:04:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:38,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825650282] [2022-11-18 21:04:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:38,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:38,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:38,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742772238] [2022-11-18 21:04:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:38,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:38,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:38,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:38,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:04:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:39,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:04:39,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:04:40,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:40,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:40,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825650282] [2022-11-18 21:04:40,060 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:40,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742772238] [2022-11-18 21:04:40,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742772238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:40,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:40,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:04:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098064180] [2022-11-18 21:04:40,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:40,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:04:40,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:40,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:04:40,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:04:40,064 INFO L87 Difference]: Start difference. First operand 2269 states and 4311 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:04:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:42,603 INFO L93 Difference]: Finished difference Result 3440 states and 6513 transitions. [2022-11-18 21:04:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:04:42,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-11-18 21:04:42,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:42,626 INFO L225 Difference]: With dead ends: 3440 [2022-11-18 21:04:42,626 INFO L226 Difference]: Without dead ends: 1219 [2022-11-18 21:04:42,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:04:42,642 INFO L413 NwaCegarLoop]: 2196 mSDtfsCounter, 2248 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 3267 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:42,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 3267 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 21:04:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-11-18 21:04:42,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2022-11-18 21:04:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 712 states have (on average 1.7514044943820224) internal successors, (1247), 1213 states have internal predecessors, (1247), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-18 21:04:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 2253 transitions. [2022-11-18 21:04:42,884 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 2253 transitions. Word has length 111 [2022-11-18 21:04:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:42,885 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 2253 transitions. [2022-11-18 21:04:42,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:04:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 2253 transitions. [2022-11-18 21:04:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 21:04:42,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:42,888 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-11-18 21:04:42,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:43,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:43,111 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1774140084, now seen corresponding path program 1 times [2022-11-18 21:04:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:43,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837770963] [2022-11-18 21:04:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:43,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:43,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:43,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398191727] [2022-11-18 21:04:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:43,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:43,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:43,238 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:43,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:05:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:22,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:05:22,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:05:22,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:22,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:22,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837770963] [2022-11-18 21:05:22,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:05:22,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398191727] [2022-11-18 21:05:22,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398191727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:22,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:22,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:05:22,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778130382] [2022-11-18 21:05:22,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:22,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:05:22,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:22,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:05:22,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:05:22,187 INFO L87 Difference]: Start difference. First operand 1219 states and 2253 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:05:22,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:22,370 INFO L93 Difference]: Finished difference Result 2390 states and 4455 transitions. [2022-11-18 21:05:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:05:22,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 118 [2022-11-18 21:05:22,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:22,384 INFO L225 Difference]: With dead ends: 2390 [2022-11-18 21:05:22,384 INFO L226 Difference]: Without dead ends: 1222 [2022-11-18 21:05:22,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:05:22,393 INFO L413 NwaCegarLoop]: 2188 mSDtfsCounter, 2 mSDsluCounter, 4372 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6560 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:22,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6560 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-11-18 21:05:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2022-11-18 21:05:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 714 states have (on average 1.7507002801120448) internal successors, (1250), 1216 states have internal predecessors, (1250), 503 states have call successors, (503), 2 states have call predecessors, (503), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-18 21:05:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 2257 transitions. [2022-11-18 21:05:22,671 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 2257 transitions. Word has length 118 [2022-11-18 21:05:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:22,672 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 2257 transitions. [2022-11-18 21:05:22,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:05:22,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 2257 transitions. [2022-11-18 21:05:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-18 21:05:22,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:22,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2022-11-18 21:05:22,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:22,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 21:05:22,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash -725533970, now seen corresponding path program 1 times [2022-11-18 21:05:22,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:22,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581061671] [2022-11-18 21:05:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:22,952 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:05:22,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64699968] [2022-11-18 21:05:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:22,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:22,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:22,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:22,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:06:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:06,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:06:06,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:06:06,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:06:06,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:06,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581061671] [2022-11-18 21:06:06,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:06:06,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64699968] [2022-11-18 21:06:06,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64699968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:06:06,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:06:06,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 21:06:06,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370280885] [2022-11-18 21:06:06,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:06:06,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:06:06,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:06,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:06:06,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:06:06,338 INFO L87 Difference]: Start difference. First operand 1222 states and 2257 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:06:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:06,703 INFO L93 Difference]: Finished difference Result 2404 states and 4476 transitions. [2022-11-18 21:06:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:06:06,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-11-18 21:06:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:06,716 INFO L225 Difference]: With dead ends: 2404 [2022-11-18 21:06:06,716 INFO L226 Difference]: Without dead ends: 1231 [2022-11-18 21:06:06,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:06:06,725 INFO L413 NwaCegarLoop]: 2188 mSDtfsCounter, 21 mSDsluCounter, 4370 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6558 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:06,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6558 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:06:06,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-11-18 21:06:07,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2022-11-18 21:06:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 722 states have (on average 1.7479224376731302) internal successors, (1262), 1224 states have internal predecessors, (1262), 503 states have call successors, (503), 3 states have call predecessors, (503), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-18 21:06:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 2269 transitions. [2022-11-18 21:06:07,072 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 2269 transitions. Word has length 120 [2022-11-18 21:06:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:07,073 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 2269 transitions. [2022-11-18 21:06:07,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:06:07,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 2269 transitions. [2022-11-18 21:06:07,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 21:06:07,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:07,077 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 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] [2022-11-18 21:06:07,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:07,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 21:06:07,278 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:07,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:07,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1588617548, now seen corresponding path program 2 times [2022-11-18 21:06:07,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:07,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413325795] [2022-11-18 21:06:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:07,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:07,363 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:06:07,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506976560] [2022-11-18 21:06:07,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:06:07,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:07,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:07,366 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:07,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 21:06:46,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:06:46,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:06:46,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 21:06:46,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:06:46,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:06:47,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:47,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413325795] [2022-11-18 21:06:47,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:06:47,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506976560] [2022-11-18 21:06:47,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506976560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:06:47,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:06:47,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-18 21:06:47,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66204736] [2022-11-18 21:06:47,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:06:47,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 21:06:47,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:47,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 21:06:47,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:06:47,019 INFO L87 Difference]: Start difference. First operand 1231 states and 2269 transitions. Second operand has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:06:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:48,298 INFO L93 Difference]: Finished difference Result 2422 states and 4501 transitions. [2022-11-18 21:06:48,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 21:06:48,299 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-11-18 21:06:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:48,310 INFO L225 Difference]: With dead ends: 2422 [2022-11-18 21:06:48,310 INFO L226 Difference]: Without dead ends: 1246 [2022-11-18 21:06:48,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2022-11-18 21:06:48,320 INFO L413 NwaCegarLoop]: 2190 mSDtfsCounter, 50 mSDsluCounter, 15295 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 17485 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:48,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 17485 Invalid, 246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:06:48,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-11-18 21:06:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1240. [2022-11-18 21:06:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 731 states have (on average 1.7428180574555403) internal successors, (1274), 1233 states have internal predecessors, (1274), 503 states have call successors, (503), 3 states have call predecessors, (503), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-18 21:06:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2281 transitions. [2022-11-18 21:06:48,590 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2281 transitions. Word has length 124 [2022-11-18 21:06:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:48,591 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2281 transitions. [2022-11-18 21:06:48,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:06:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2281 transitions. [2022-11-18 21:06:48,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-18 21:06:48,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:48,594 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 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] [2022-11-18 21:06:48,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:48,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 21:06:48,795 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:48,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1818700008, now seen corresponding path program 3 times [2022-11-18 21:06:48,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:48,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069875322] [2022-11-18 21:06:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:48,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:48,922 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:06:48,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334584076] [2022-11-18 21:06:48,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:06:48,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:48,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:48,940 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:48,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2e6dac-d3df-42e9-9a27-3cac40e1e03e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process