./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/mapavg5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/mapavg5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa --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 407fcf7d2eac351408fa4d5f2ec0e8445116bd56ec588be775b50f5c012c0e01 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:11:38,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:11:38,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:11:38,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:11:38,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:11:38,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:11:38,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:11:38,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:11:38,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:11:38,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:11:38,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:11:38,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:11:38,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:11:38,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:11:38,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:11:38,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:11:38,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:11:38,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:11:38,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:11:38,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:11:38,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:11:38,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:11:38,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:11:38,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:11:38,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:11:38,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:11:38,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:11:38,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:11:38,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:11:38,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:11:38,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:11:38,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:11:38,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:11:38,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:11:38,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:11:38,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:11:38,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:11:38,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:11:38,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:11:38,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:11:38,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:11:38,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:11:38,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:11:38,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:11:38,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:11:38,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:11:38,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:11:38,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:11:38,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:11:38,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:11:38,273 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:11:38,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:11:38,274 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:11:38,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:11:38,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:11:38,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:11:38,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:11:38,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:11:38,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:11:38,275 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:11:38,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:11:38,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:11:38,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:11:38,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:11:38,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:11:38,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:11:38,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:11:38,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:11:38,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:11:38,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:11:38,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:11:38,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:11:38,281 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:11:38,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:11:38,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:11:38,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:11:38,281 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_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 407fcf7d2eac351408fa4d5f2ec0e8445116bd56ec588be775b50f5c012c0e01 [2021-12-06 22:11:38,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:11:38,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:11:38,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:11:38,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:11:38,479 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:11:38,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-crafted/mapavg5.i [2021-12-06 22:11:38,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/data/819edc622/7e8699a3a2b64ba893a6f48255fd1722/FLAG8cb562301 [2021-12-06 22:11:38,901 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:11:38,902 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/sv-benchmarks/c/array-crafted/mapavg5.i [2021-12-06 22:11:38,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/data/819edc622/7e8699a3a2b64ba893a6f48255fd1722/FLAG8cb562301 [2021-12-06 22:11:38,917 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/data/819edc622/7e8699a3a2b64ba893a6f48255fd1722 [2021-12-06 22:11:38,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:11:38,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:11:38,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:11:38,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:11:38,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:11:38,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:11:38" (1/1) ... [2021-12-06 22:11:38,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79268069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:38, skipping insertion in model container [2021-12-06 22:11:38,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:11:38" (1/1) ... [2021-12-06 22:11:38,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:11:38,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:11:39,055 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_9479ca34-84a6-4d27-bf87-a50d8499c078/sv-benchmarks/c/array-crafted/mapavg5.i[1383,1396] [2021-12-06 22:11:39,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:11:39,063 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:11:39,077 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_9479ca34-84a6-4d27-bf87-a50d8499c078/sv-benchmarks/c/array-crafted/mapavg5.i[1383,1396] [2021-12-06 22:11:39,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:11:39,088 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:11:39,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39 WrapperNode [2021-12-06 22:11:39,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:11:39,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:11:39,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:11:39,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:11:39,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (1/1) ... [2021-12-06 22:11:39,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (1/1) ... [2021-12-06 22:11:39,124 INFO L137 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2021-12-06 22:11:39,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:11:39,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:11:39,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:11:39,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:11:39,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (1/1) ... [2021-12-06 22:11:39,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (1/1) ... [2021-12-06 22:11:39,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (1/1) ... [2021-12-06 22:11:39,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (1/1) ... [2021-12-06 22:11:39,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (1/1) ... [2021-12-06 22:11:39,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (1/1) ... [2021-12-06 22:11:39,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (1/1) ... [2021-12-06 22:11:39,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:11:39,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:11:39,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:11:39,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:11:39,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (1/1) ... [2021-12-06 22:11:39,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:11:39,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:11:39,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:11:39,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:11:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:11:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:11:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:11:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:11:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:11:39,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:11:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:11:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2021-12-06 22:11:39,202 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2021-12-06 22:11:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:11:39,253 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:11:39,254 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:11:39,350 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:11:39,354 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:11:39,354 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 22:11:39,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:11:39 BoogieIcfgContainer [2021-12-06 22:11:39,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:11:39,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:11:39,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:11:39,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:11:39,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:11:38" (1/3) ... [2021-12-06 22:11:39,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc6c85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:11:39, skipping insertion in model container [2021-12-06 22:11:39,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:11:39" (2/3) ... [2021-12-06 22:11:39,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc6c85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:11:39, skipping insertion in model container [2021-12-06 22:11:39,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:11:39" (3/3) ... [2021-12-06 22:11:39,362 INFO L111 eAbstractionObserver]: Analyzing ICFG mapavg5.i [2021-12-06 22:11:39,366 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:11:39,366 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:11:39,401 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:11:39,407 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:11:39,407 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:11:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:11:39,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 22:11:39,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:39,426 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:39,426 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:39,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:39,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2030793856, now seen corresponding path program 1 times [2021-12-06 22:11:39,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:39,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111113582] [2021-12-06 22:11:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:39,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:39,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:11:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:11:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:11:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:11:39,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:11:39,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111113582] [2021-12-06 22:11:39,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111113582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:11:39,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:11:39,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:11:39,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106554299] [2021-12-06 22:11:39,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:11:39,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:11:39,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:11:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:11:39,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:11:39,621 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:11:39,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:39,636 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2021-12-06 22:11:39,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:11:39,638 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-12-06 22:11:39,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:39,643 INFO L225 Difference]: With dead ends: 51 [2021-12-06 22:11:39,644 INFO L226 Difference]: Without dead ends: 23 [2021-12-06 22:11:39,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:11:39,651 INFO L933 BasicCegarLoop]: 33 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, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:39,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:11:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-06 22:11:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-06 22:11:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:11:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-12-06 22:11:39,686 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2021-12-06 22:11:39,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:39,686 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-12-06 22:11:39,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:11:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-12-06 22:11:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 22:11:39,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:39,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:39,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:11:39,690 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:39,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1398988038, now seen corresponding path program 1 times [2021-12-06 22:11:39,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:39,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378165728] [2021-12-06 22:11:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:39,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:11:39,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:11:39,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378165728] [2021-12-06 22:11:39,758 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 22:11:39,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958967720] [2021-12-06 22:11:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:39,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:39,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:11:39,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:11:39,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:11:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:39,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:11:39,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:11:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:11:39,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:11:39,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958967720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:11:39,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:11:39,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:11:39,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761111545] [2021-12-06 22:11:39,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:11:39,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:11:39,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:11:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:11:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:11:39,899 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:11:39,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:39,921 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2021-12-06 22:11:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:11:39,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-12-06 22:11:39,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:39,923 INFO L225 Difference]: With dead ends: 43 [2021-12-06 22:11:39,923 INFO L226 Difference]: Without dead ends: 25 [2021-12-06 22:11:39,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:11:39,925 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:39,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 40 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:11:39,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-06 22:11:39,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-12-06 22:11:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:11:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-12-06 22:11:39,932 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2021-12-06 22:11:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:39,933 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-12-06 22:11:39,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:11:39,933 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-12-06 22:11:39,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 22:11:39,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:39,934 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:39,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:11:40,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:40,137 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:40,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1708163684, now seen corresponding path program 1 times [2021-12-06 22:11:40,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:40,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597033894] [2021-12-06 22:11:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:40,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:40,214 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:11:40,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044851431] [2021-12-06 22:11:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:40,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:40,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:11:40,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:11:40,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:11:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:40,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:11:40,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:11:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:11:40,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:11:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:11:40,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:11:40,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597033894] [2021-12-06 22:11:40,454 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:11:40,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044851431] [2021-12-06 22:11:40,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044851431] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:11:40,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:11:40,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-06 22:11:40,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496012906] [2021-12-06 22:11:40,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:11:40,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:11:40,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:11:40,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:11:40,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:11:40,457 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 22:11:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:40,491 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2021-12-06 22:11:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:11:40,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 31 [2021-12-06 22:11:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:40,493 INFO L225 Difference]: With dead ends: 45 [2021-12-06 22:11:40,493 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 22:11:40,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:11:40,495 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:40,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 85 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:11:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 22:11:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-12-06 22:11:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:11:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-12-06 22:11:40,501 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 31 [2021-12-06 22:11:40,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:40,501 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-12-06 22:11:40,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 22:11:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-12-06 22:11:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:11:40,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:40,503 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:40,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:11:40,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:40,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:40,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:40,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1821751230, now seen corresponding path program 2 times [2021-12-06 22:11:40,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:40,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003833298] [2021-12-06 22:11:40,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:40,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:40,764 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:11:40,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135913257] [2021-12-06 22:11:40,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:11:40,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:40,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:11:40,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:11:40,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:11:40,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 22:11:40,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:11:40,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:11:40,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:11:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 22:11:41,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:11:41,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:11:41,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003833298] [2021-12-06 22:11:41,020 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:11:41,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135913257] [2021-12-06 22:11:41,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135913257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:11:41,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:11:41,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:11:41,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127636368] [2021-12-06 22:11:41,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:11:41,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:11:41,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:11:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:11:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:11:41,022 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:11:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:41,049 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-12-06 22:11:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:11:41,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2021-12-06 22:11:41,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:41,050 INFO L225 Difference]: With dead ends: 45 [2021-12-06 22:11:41,050 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 22:11:41,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:11:41,051 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:41,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:11:41,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 22:11:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-12-06 22:11:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:11:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-12-06 22:11:41,055 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2021-12-06 22:11:41,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:41,056 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-12-06 22:11:41,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:11:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-12-06 22:11:41,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 22:11:41,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:41,057 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:41,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:11:41,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:41,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:41,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:41,261 INFO L85 PathProgramCache]: Analyzing trace with hash 533240604, now seen corresponding path program 1 times [2021-12-06 22:11:41,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:41,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400022159] [2021-12-06 22:11:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:41,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:41,318 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:11:41,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538768901] [2021-12-06 22:11:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:41,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:41,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:11:41,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:11:41,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:11:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:41,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:11:41,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:11:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 22:11:41,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:11:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:11:41,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:11:41,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400022159] [2021-12-06 22:11:41,562 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:11:41,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538768901] [2021-12-06 22:11:41,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538768901] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:11:41,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:11:41,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2021-12-06 22:11:41,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135394718] [2021-12-06 22:11:41,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:11:41,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:11:41,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:11:41,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:11:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:11:41,564 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 22:11:41,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:41,608 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2021-12-06 22:11:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:11:41,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2021-12-06 22:11:41,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:41,609 INFO L225 Difference]: With dead ends: 48 [2021-12-06 22:11:41,609 INFO L226 Difference]: Without dead ends: 30 [2021-12-06 22:11:41,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:11:41,611 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:41,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 35 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:11:41,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-06 22:11:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-12-06 22:11:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:11:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-12-06 22:11:41,615 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 39 [2021-12-06 22:11:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:41,615 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-12-06 22:11:41,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 22:11:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-12-06 22:11:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 22:11:41,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:41,617 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:41,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:11:41,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:41,819 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:41,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:41,820 INFO L85 PathProgramCache]: Analyzing trace with hash 393560058, now seen corresponding path program 2 times [2021-12-06 22:11:41,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:41,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914347556] [2021-12-06 22:11:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:41,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:41,864 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:11:41,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85073105] [2021-12-06 22:11:41,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:11:41,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:41,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:11:41,866 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:11:41,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:11:41,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:11:41,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:11:41,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:11:41,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:11:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 22:11:41,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:11:41,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:11:41,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914347556] [2021-12-06 22:11:41,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:11:41,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85073105] [2021-12-06 22:11:41,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85073105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:11:41,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:11:41,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:11:41,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746084854] [2021-12-06 22:11:41,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:11:41,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:11:41,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:11:41,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:11:41,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:11:41,983 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:11:42,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:42,002 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2021-12-06 22:11:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:11:42,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2021-12-06 22:11:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:42,003 INFO L225 Difference]: With dead ends: 46 [2021-12-06 22:11:42,003 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 22:11:42,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:11:42,004 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:42,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 26 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:11:42,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 22:11:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-12-06 22:11:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:11:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-12-06 22:11:42,008 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 45 [2021-12-06 22:11:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:42,009 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-12-06 22:11:42,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:11:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-12-06 22:11:42,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 22:11:42,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:42,009 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:42,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:11:42,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 22:11:42,211 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:42,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:42,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1802749368, now seen corresponding path program 1 times [2021-12-06 22:11:42,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:42,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597453879] [2021-12-06 22:11:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:42,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:42,261 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:11:42,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158802680] [2021-12-06 22:11:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:42,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:42,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:11:42,266 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:11:42,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9479ca34-84a6-4d27-bf87-a50d8499c078/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:11:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:42,398 WARN L261 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 102 conjunts are in the unsatisfiable core [2021-12-06 22:11:42,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:11:43,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:43,114 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:11:43,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 278 treesize of output 148 [2021-12-06 22:11:55,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:55,823 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:11:55,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 527 treesize of output 282 [2021-12-06 22:12:05,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:12:05,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:12:05,466 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:12:05,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 436 treesize of output 294 [2021-12-06 22:12:11,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:12:11,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:12:11,803 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:12:11,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 778 treesize of output 397 [2021-12-06 22:12:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 22:12:40,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:13:37,298 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 103 DAG size of output: 68 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:14:40,584 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 105 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:16:32,186 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse56 (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|)) (.cse55 (+ 4 |c_ULTIMATE.start_main_~#x~0#1.offset|))) (let ((.cse57 (select .cse56 .cse55)) (.cse58 (select .cse56 |c_ULTIMATE.start_main_~#x~0#1.offset|))) (let ((.cse45 (+ .cse57 .cse58 1)) (.cse53 (let ((.cse54 (store (store .cse56 |c_ULTIMATE.start_main_~#x~0#1.offset| .cse57) (+ (* c_~N~0 4) (- 4) |c_ULTIMATE.start_main_~#x~0#1.offset|) .cse58))) (+ (select .cse54 |c_ULTIMATE.start_main_~#x~0#1.offset|) (select .cse54 .cse55) 1)))) (let ((.cse52 (div .cse53 c_~N~0)) (.cse50 (div .cse45 c_~N~0)) (.cse21 (= (mod .cse53 c_~N~0) 0))) (let ((.cse2 (not .cse21)) (.cse4 (< .cse53 0)) (.cse43 (+ |c_ULTIMATE.start_main_~ret~1#1| 4294967296)) (.cse51 (mod (+ .cse50 1) 4294967296)) (.cse49 (mod .cse52 4294967296)) (.cse20 (<= 0 .cse53)) (.cse48 (mod (+ .cse52 1) 4294967296)) (.cse46 (mod .cse50 4294967296))) (let ((.cse25 (= (mod .cse45 c_~N~0) 0)) (.cse18 (= .cse46 |c_ULTIMATE.start_main_~ret~1#1|)) (.cse29 (= .cse48 |c_ULTIMATE.start_main_~ret~1#1|)) (.cse47 (mod (+ .cse52 4294967295) 4294967296)) (.cse12 (or .cse20 .cse21)) (.cse37 (<= .cse49 2147483647)) (.cse23 (= .cse49 |c_ULTIMATE.start_main_~ret~1#1|)) (.cse28 (= |c_ULTIMATE.start_main_~ret~1#1| .cse51)) (.cse13 (= .cse49 .cse43)) (.cse22 (and .cse2 .cse4)) (.cse35 (= .cse43 .cse51)) (.cse3 (= .cse48 .cse43))) (let ((.cse36 (or .cse20 .cse21 (and .cse35 .cse3))) (.cse39 (or (and .cse35 .cse13) .cse22)) (.cse40 (<= .cse51 2147483647)) (.cse30 (or (and .cse23 .cse28) .cse22)) (.cse6 (or (and .cse12 .cse13) .cse37)) (.cse27 (< 2147483647 .cse51)) (.cse41 (mod (+ 4294967295 .cse50) 4294967296)) (.cse26 (<= 0 .cse45)) (.cse1 (<= .cse46 2147483647)) (.cse8 (< 2147483647 .cse48)) (.cse5 (< 2147483647 .cse49)) (.cse15 (= .cse43 .cse47)) (.cse14 (= .cse46 .cse43)) (.cse10 (<= 0 c_~N~0)) (.cse19 (= |c_ULTIMATE.start_main_~ret~1#1| .cse47)) (.cse7 (<= .cse47 2147483647)) (.cse33 (<= .cse48 2147483647)) (.cse11 (< 2147483647 .cse47)) (.cse16 (or .cse20 .cse21 (and .cse18 .cse29))) (.cse38 (or .cse37 .cse22)) (.cse9 (< c_~N~0 0)) (.cse24 (< 2147483647 .cse46)) (.cse0 (and (< .cse45 0) (not .cse25)))) (and (or (and (or .cse0 (and (or .cse1 (and (or (and (or (and .cse2 .cse3 .cse4) .cse5) .cse6 .cse7 .cse8) .cse9) (or .cse10 (and (or .cse11 (and .cse12 .cse5 .cse13)) (or .cse7 (and .cse2 .cse8 .cse14 .cse4 .cse15)))))) (or (let ((.cse17 (or .cse22 (and .cse23 .cse18)))) (and (or (and .cse16 .cse17) .cse9) (or .cse10 (and (or (and .cse18 .cse19) .cse20 .cse21) .cse17)))) .cse24))) (or .cse25 .cse26 (let ((.cse34 (= .cse41 |c_ULTIMATE.start_main_~ret~1#1|))) (let ((.cse31 (or .cse22 (and .cse23 .cse34))) (.cse32 (or .cse20 .cse21 (and .cse19 .cse34)))) (and (or .cse27 (and (or (and (or .cse20 .cse21 (and .cse28 .cse29)) .cse30) .cse9) (or .cse10 (and .cse31 .cse32 (or .cse7 (and .cse23 .cse33 .cse12 .cse34)))))) (or (and (or (and (or (and .cse35 .cse36 (or .cse13 .cse22) (or .cse5 .cse22)) .cse9) (or .cse10 (and (or .cse20 .cse21 .cse34) (or (and .cse23 .cse12 .cse34) .cse8) .cse31 .cse37 .cse7))) .cse24) (or .cse1 (and (or .cse10 (and (or .cse34 .cse22) .cse7 .cse8 .cse32 .cse38)) (or (and (or .cse20 .cse21 .cse3) .cse5 (or .cse20 .cse35) .cse39) .cse9)))) .cse40)))))) (< 2147483647 .cse41)) (or (<= .cse41 2147483647) (and (or .cse25 (let ((.cse42 (= .cse41 .cse43))) (and (or (and (or .cse10 (and (or .cse20 .cse21 (and .cse42 .cse15)) .cse8 (or (and .cse42 .cse13) .cse22))) (or (and .cse36 .cse11 .cse39) .cse9)) .cse40) (or (and (or .cse1 (and (or (and (or .cse5 (and .cse28 .cse12)) .cse33 .cse11 (or .cse37 (and .cse2 .cse29 .cse4))) .cse9) (or .cse10 (and (or .cse33 (and .cse42 .cse12 .cse13)) (or (and .cse42 .cse2 .cse4 .cse15) .cse8))))) (or (and (or (and (or .cse11 (and .cse23 .cse28 .cse12)) .cse33 (or .cse20 .cse21 .cse29) .cse37 .cse30) .cse9) (or .cse10 (and .cse33 .cse6 .cse11 (or .cse5 (and .cse2 .cse4 .cse15))))) .cse24)) .cse27))) .cse26) (or (and (or .cse1 (let ((.cse44 (or (and .cse14 .cse13) .cse22))) (and (or (and (or .cse8 (and .cse12 .cse14 .cse13)) (or .cse20 .cse21 (and .cse14 .cse3)) .cse44) .cse9) (or .cse10 (and (or .cse5 (and .cse2 .cse14 .cse4 .cse15)) (or .cse20 (and .cse14 .cse15) .cse21) .cse44))))) (or (and (or .cse10 (and (or (and .cse2 .cse18 .cse19 .cse4) .cse11) (or .cse7 (and .cse33 .cse12 .cse18 .cse37)))) (or (and .cse33 .cse11 (or .cse18 .cse22) .cse16 .cse38) .cse9)) .cse24)) .cse0))))))))))) is different from false