./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifncomp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifncomp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ --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 6359f1f4cb6aed42e13f4959731bd90b4ed828bda061bd22e3b91472b1893854 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:08:54,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:08:54,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:08:54,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:08:54,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:08:54,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:08:54,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:08:54,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:08:54,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:08:54,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:08:54,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:08:54,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:08:54,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:08:54,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:08:54,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:08:54,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:08:54,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:08:54,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:08:54,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:08:54,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:08:54,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:08:54,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:08:54,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:08:54,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:08:54,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:08:54,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:08:54,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:08:54,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:08:54,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:08:54,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:08:54,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:08:54,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:08:54,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:08:54,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:08:54,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:08:54,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:08:54,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:08:54,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:08:54,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:08:54,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:08:54,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:08:54,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:08:54,378 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:08:54,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:08:54,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:08:54,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:08:54,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:08:54,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:08:54,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:08:54,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:08:54,386 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:08:54,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:08:54,388 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:08:54,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:08:54,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:08:54,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:08:54,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:08:54,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:08:54,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:08:54,390 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:08:54,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:08:54,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:08:54,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:08:54,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:08:54,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:08:54,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:08:54,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:08:54,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:08:54,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:08:54,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:08:54,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:08:54,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:08:54,395 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:08:54,396 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:08:54,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:08:54,396 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_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6359f1f4cb6aed42e13f4959731bd90b4ed828bda061bd22e3b91472b1893854 [2022-10-17 10:08:54,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:08:54,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:08:54,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:08:54,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:08:54,848 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:08:54,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/array-fpi/ifncomp.c [2022-10-17 10:08:54,937 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/data/2c06f50d4/19a618ea188f4c39a33df2e241bff7b5/FLAG06c3574d7 [2022-10-17 10:08:55,561 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:08:55,565 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/sv-benchmarks/c/array-fpi/ifncomp.c [2022-10-17 10:08:55,577 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/data/2c06f50d4/19a618ea188f4c39a33df2e241bff7b5/FLAG06c3574d7 [2022-10-17 10:08:55,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/data/2c06f50d4/19a618ea188f4c39a33df2e241bff7b5 [2022-10-17 10:08:55,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:08:55,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:08:55,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:08:55,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:08:55,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:08:55,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:08:55" (1/1) ... [2022-10-17 10:08:55,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ec9e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:55, skipping insertion in model container [2022-10-17 10:08:55,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:08:55" (1/1) ... [2022-10-17 10:08:55,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:08:55,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:08:56,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/sv-benchmarks/c/array-fpi/ifncomp.c[590,603] [2022-10-17 10:08:56,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:08:56,244 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:08:56,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/sv-benchmarks/c/array-fpi/ifncomp.c[590,603] [2022-10-17 10:08:56,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:08:56,303 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:08:56,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56 WrapperNode [2022-10-17 10:08:56,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:08:56,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:08:56,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:08:56,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:08:56,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,385 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2022-10-17 10:08:56,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:08:56,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:08:56,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:08:56,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:08:56,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,444 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:08:56,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:08:56,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:08:56,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:08:56,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (1/1) ... [2022-10-17 10:08:56,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:08:56,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:08:56,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:08:56,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:08:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:08:56,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:08:56,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:08:56,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:08:56,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:08:56,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:08:56,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:08:56,684 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:08:56,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:08:57,025 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:08:57,031 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:08:57,032 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:08:57,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:08:57 BoogieIcfgContainer [2022-10-17 10:08:57,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:08:57,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:08:57,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:08:57,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:08:57,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:08:55" (1/3) ... [2022-10-17 10:08:57,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3893664c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:08:57, skipping insertion in model container [2022-10-17 10:08:57,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:08:56" (2/3) ... [2022-10-17 10:08:57,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3893664c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:08:57, skipping insertion in model container [2022-10-17 10:08:57,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:08:57" (3/3) ... [2022-10-17 10:08:57,044 INFO L112 eAbstractionObserver]: Analyzing ICFG ifncomp.c [2022-10-17 10:08:57,065 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:08:57,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:08:57,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:08:57,155 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;@4eb0440e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:08:57,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:08:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:57,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:08:57,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:08:57,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:08:57,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:08:57,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:08:57,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1152450264, now seen corresponding path program 1 times [2022-10-17 10:08:57,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:08:57,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321521914] [2022-10-17 10:08:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:08:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:08:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:08:57,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:08:57,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321521914] [2022-10-17 10:08:57,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:08:57,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712395491] [2022-10-17 10:08:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:08:57,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:08:57,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:08:57,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:08:57,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:08:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:08:57,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:08:57,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:08:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:08:57,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:08:57,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712395491] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:08:57,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:08:57,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:08:57,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297541618] [2022-10-17 10:08:57,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:08:57,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:08:57,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:08:57,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:08:57,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:08:57,646 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:08:57,664 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2022-10-17 10:08:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:08:57,667 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-10-17 10:08:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:08:57,675 INFO L225 Difference]: With dead ends: 50 [2022-10-17 10:08:57,676 INFO L226 Difference]: Without dead ends: 23 [2022-10-17 10:08:57,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:08:57,683 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2022-10-17 10:08:57,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:08:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-17 10:08:57,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-17 10:08:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-10-17 10:08:57,722 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 14 [2022-10-17 10:08:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:08:57,723 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-10-17 10:08:57,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-10-17 10:08:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:08:57,724 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:08:57,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:08:57,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:08:57,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:08:57,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:08:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:08:57,953 INFO L85 PathProgramCache]: Analyzing trace with hash 670750212, now seen corresponding path program 1 times [2022-10-17 10:08:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:08:57,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476765208] [2022-10-17 10:08:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:08:57,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:08:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:08:58,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:08:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476765208] [2022-10-17 10:08:58,052 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:08:58,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964384077] [2022-10-17 10:08:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:08:58,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:08:58,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:08:58,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:08:58,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:08:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:08:58,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:08:58,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:08:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:08:58,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:08:58,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964384077] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:08:58,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:08:58,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:08:58,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721878029] [2022-10-17 10:08:58,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:08:58,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:08:58,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:08:58,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:08:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:08:58,252 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:58,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:08:58,423 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2022-10-17 10:08:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:08:58,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-10-17 10:08:58,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:08:58,426 INFO L225 Difference]: With dead ends: 53 [2022-10-17 10:08:58,426 INFO L226 Difference]: Without dead ends: 38 [2022-10-17 10:08:58,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:08:58,428 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:08:58,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 16 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:08:58,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-17 10:08:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2022-10-17 10:08:58,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-10-17 10:08:58,443 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2022-10-17 10:08:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:08:58,445 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-10-17 10:08:58,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:58,446 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-10-17 10:08:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 10:08:58,447 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:08:58,447 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] [2022-10-17 10:08:58,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:08:58,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:08:58,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:08:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:08:58,677 INFO L85 PathProgramCache]: Analyzing trace with hash -203130337, now seen corresponding path program 1 times [2022-10-17 10:08:58,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:08:58,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509299730] [2022-10-17 10:08:58,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:08:58,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:08:58,711 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:08:58,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853251610] [2022-10-17 10:08:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:08:58,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:08:58,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:08:58,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:08:58,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:08:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:08:58,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:08:58,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:08:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:08:58,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:08:58,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:08:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509299730] [2022-10-17 10:08:58,833 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:08:58,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853251610] [2022-10-17 10:08:58,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853251610] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:08:58,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:08:58,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:08:58,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208867647] [2022-10-17 10:08:58,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:08:58,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:08:58,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:08:58,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:08:58,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:08:58,852 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:58,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:08:58,928 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2022-10-17 10:08:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:08:58,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-10-17 10:08:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:08:58,930 INFO L225 Difference]: With dead ends: 58 [2022-10-17 10:08:58,930 INFO L226 Difference]: Without dead ends: 38 [2022-10-17 10:08:58,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:08:58,932 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:08:58,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 25 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:08:58,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-17 10:08:58,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2022-10-17 10:08:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-10-17 10:08:58,949 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2022-10-17 10:08:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:08:58,949 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-10-17 10:08:58,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-10-17 10:08:58,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 10:08:58,951 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:08:58,951 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] [2022-10-17 10:08:58,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:08:59,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-17 10:08:59,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:08:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:08:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1978137699, now seen corresponding path program 1 times [2022-10-17 10:08:59,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:08:59,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768722343] [2022-10-17 10:08:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:08:59,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:08:59,210 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:08:59,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044558423] [2022-10-17 10:08:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:08:59,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:08:59,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:08:59,215 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:08:59,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:08:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:08:59,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:08:59,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:08:59,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:08:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:08:59,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:08:59,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:08:59,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768722343] [2022-10-17 10:08:59,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:08:59,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044558423] [2022-10-17 10:08:59,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044558423] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:08:59,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:08:59,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:08:59,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179047689] [2022-10-17 10:08:59,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:08:59,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:08:59,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:08:59,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:08:59,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:08:59,456 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:08:59,590 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2022-10-17 10:08:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:08:59,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-10-17 10:08:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:08:59,592 INFO L225 Difference]: With dead ends: 46 [2022-10-17 10:08:59,592 INFO L226 Difference]: Without dead ends: 44 [2022-10-17 10:08:59,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:08:59,594 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:08:59,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:08:59,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-17 10:08:59,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2022-10-17 10:08:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-10-17 10:08:59,604 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 23 [2022-10-17 10:08:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:08:59,605 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-10-17 10:08:59,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:08:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-10-17 10:08:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 10:08:59,607 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:08:59,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:08:59,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:08:59,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:08:59,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:08:59,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:08:59,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1659346963, now seen corresponding path program 1 times [2022-10-17 10:08:59,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:08:59,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234801667] [2022-10-17 10:08:59,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:08:59,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:08:59,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:08:59,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285617117] [2022-10-17 10:08:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:08:59,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:08:59,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:08:59,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:08:59,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:08:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:08:59,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:08:59,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:09:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:09:00,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:09:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:09:00,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:00,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234801667] [2022-10-17 10:09:00,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:09:00,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285617117] [2022-10-17 10:09:00,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285617117] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:09:00,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:09:00,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-10-17 10:09:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80157590] [2022-10-17 10:09:00,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:09:00,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:09:00,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:09:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:09:00,171 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:00,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:00,428 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2022-10-17 10:09:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:09:00,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 26 [2022-10-17 10:09:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:00,432 INFO L225 Difference]: With dead ends: 92 [2022-10-17 10:09:00,432 INFO L226 Difference]: Without dead ends: 53 [2022-10-17 10:09:00,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:09:00,434 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 55 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:00,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 44 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:09:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-10-17 10:09:00,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35. [2022-10-17 10:09:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-10-17 10:09:00,444 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 26 [2022-10-17 10:09:00,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:00,444 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-10-17 10:09:00,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:00,445 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-10-17 10:09:00,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-17 10:09:00,446 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:00,446 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-10-17 10:09:00,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:09:00,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:09:00,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:00,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:00,672 INFO L85 PathProgramCache]: Analyzing trace with hash -643446870, now seen corresponding path program 1 times [2022-10-17 10:09:00,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:00,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514350061] [2022-10-17 10:09:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:00,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:00,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:09:00,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743602936] [2022-10-17 10:09:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:00,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:09:00,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:09:00,779 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:09:00,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:09:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:00,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-17 10:09:00,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:09:00,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:09:01,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-17 10:09:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:09:01,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:09:01,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-10-17 10:09:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:09:01,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:01,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514350061] [2022-10-17 10:09:01,440 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:09:01,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743602936] [2022-10-17 10:09:01,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743602936] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:09:01,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:09:01,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2022-10-17 10:09:01,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402288328] [2022-10-17 10:09:01,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:09:01,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:09:01,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:01,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:09:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:09:01,446 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 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) [2022-10-17 10:09:01,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:01,714 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2022-10-17 10:09:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:09:01,715 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 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 32 [2022-10-17 10:09:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:01,716 INFO L225 Difference]: With dead ends: 78 [2022-10-17 10:09:01,716 INFO L226 Difference]: Without dead ends: 66 [2022-10-17 10:09:01,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:09:01,718 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:01,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 70 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 109 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2022-10-17 10:09:01,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-10-17 10:09:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 46. [2022-10-17 10:09:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-10-17 10:09:01,731 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 32 [2022-10-17 10:09:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:01,731 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-10-17 10:09:01,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 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) [2022-10-17 10:09:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-10-17 10:09:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 10:09:01,733 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:01,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2022-10-17 10:09:01,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-17 10:09:01,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:09:01,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:01,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2051071008, now seen corresponding path program 1 times [2022-10-17 10:09:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:01,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081103241] [2022-10-17 10:09:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:01,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:02,010 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:09:02,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914086411] [2022-10-17 10:09:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:02,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:09:02,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:09:02,012 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:09:02,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e798adf5-ac5f-4ed5-8152-672bee34a0da/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:09:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:02,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-17 10:09:02,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:09:02,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2022-10-17 10:09:02,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:09:02,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:09:02,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-17 10:09:02,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-17 10:09:02,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:09:02,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-10-17 10:09:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:09:03,096 INFO L328 TraceCheckSpWp]: Computing backward predicates...