./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt --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 16e44106b644814d0196d007ce0d0a086559de50 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:46:20,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:46:20,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:46:20,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:46:20,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:46:20,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:46:20,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:46:20,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:46:20,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:46:20,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:46:20,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:46:20,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:46:20,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:46:20,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:46:20,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:46:20,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:46:20,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:46:20,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:46:20,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:46:20,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:46:20,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:46:20,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:46:20,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:46:20,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:46:20,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:46:20,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:46:20,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:46:20,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:46:20,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:46:20,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:46:20,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:46:20,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:46:20,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:46:20,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:46:20,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:46:20,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:46:20,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:46:20,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:46:20,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:46:20,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:46:20,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:46:20,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:46:20,279 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:46:20,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:46:20,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:46:20,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:46:20,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:46:20,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:46:20,284 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:46:20,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:46:20,285 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:46:20,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:46:20,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:46:20,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:46:20,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:46:20,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:46:20,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:46:20,288 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:46:20,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:46:20,288 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:46:20,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:46:20,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:46:20,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:46:20,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:46:20,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:46:20,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:46:20,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:46:20,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:46:20,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:46:20,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:46:20,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:46:20,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:46:20,293 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_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16e44106b644814d0196d007ce0d0a086559de50 [2021-10-13 00:46:20,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:46:20,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:46:20,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:46:20,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:46:20,678 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:46:20,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2021-10-13 00:46:20,769 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/data/0c948769d/d7b9895a42834291a10e49f1ec8c358f/FLAGba898d72a [2021-10-13 00:46:21,432 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:46:21,435 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2021-10-13 00:46:21,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/data/0c948769d/d7b9895a42834291a10e49f1ec8c358f/FLAGba898d72a [2021-10-13 00:46:21,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/data/0c948769d/d7b9895a42834291a10e49f1ec8c358f [2021-10-13 00:46:21,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:46:21,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:46:21,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:46:21,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:46:21,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:46:21,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:46:21" (1/1) ... [2021-10-13 00:46:21,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560beaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:21, skipping insertion in model container [2021-10-13 00:46:21,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:46:21" (1/1) ... [2021-10-13 00:46:21,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:46:21,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:46:22,005 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2021-10-13 00:46:22,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:46:22,036 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:46:22,052 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2021-10-13 00:46:22,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:46:22,082 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:46:22,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22 WrapperNode [2021-10-13 00:46:22,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:46:22,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:46:22,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:46:22,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:46:22,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (1/1) ... [2021-10-13 00:46:22,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (1/1) ... [2021-10-13 00:46:22,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:46:22,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:46:22,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:46:22,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:46:22,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (1/1) ... [2021-10-13 00:46:22,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (1/1) ... [2021-10-13 00:46:22,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (1/1) ... [2021-10-13 00:46:22,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (1/1) ... [2021-10-13 00:46:22,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (1/1) ... [2021-10-13 00:46:22,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (1/1) ... [2021-10-13 00:46:22,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (1/1) ... [2021-10-13 00:46:22,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:46:22,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:46:22,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:46:22,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:46:22,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (1/1) ... [2021-10-13 00:46:22,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:46:22,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:22,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:46:22,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:46:22,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:46:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:46:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:46:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:46:22,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:46:22,715 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-13 00:46:22,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:46:22 BoogieIcfgContainer [2021-10-13 00:46:22,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:46:22,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:46:22,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:46:22,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:46:22,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:46:21" (1/3) ... [2021-10-13 00:46:22,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f2fa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:46:22, skipping insertion in model container [2021-10-13 00:46:22,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:46:22" (2/3) ... [2021-10-13 00:46:22,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f2fa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:46:22, skipping insertion in model container [2021-10-13 00:46:22,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:46:22" (3/3) ... [2021-10-13 00:46:22,727 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound5.c [2021-10-13 00:46:22,733 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:46:22,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 00:46:22,822 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:46:22,843 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:46:22,843 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 00:46:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 42 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:46:22,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:22,869 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:22,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:22,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:22,877 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-13 00:46:22,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:22,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001678104] [2021-10-13 00:46:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:22,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:23,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:23,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001678104] [2021-10-13 00:46:23,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001678104] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:23,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:23,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:46:23,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526360935] [2021-10-13 00:46:23,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:46:23,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:46:23,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:46:23,215 INFO L87 Difference]: Start difference. First operand has 43 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 42 states have internal predecessors, (59), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:23,249 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2021-10-13 00:46:23,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:46:23,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-10-13 00:46:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:23,261 INFO L225 Difference]: With dead ends: 83 [2021-10-13 00:46:23,261 INFO L226 Difference]: Without dead ends: 39 [2021-10-13 00:46:23,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:46:23,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-13 00:46:23,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-13 00:46:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.28125) internal successors, (41), 38 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) [2021-10-13 00:46:23,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-13 00:46:23,311 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2021-10-13 00:46:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:23,312 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-13 00:46:23,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-13 00:46:23,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:46:23,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:23,314 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:23,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:46:23,316 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:23,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:23,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-13 00:46:23,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:23,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244377340] [2021-10-13 00:46:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:23,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:23,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:23,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244377340] [2021-10-13 00:46:23,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244377340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:23,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:23,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:46:23,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220982922] [2021-10-13 00:46:23,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:46:23,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:23,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:46:23,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:46:23,505 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:23,623 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-10-13 00:46:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:46:23,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-13 00:46:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:23,627 INFO L225 Difference]: With dead ends: 58 [2021-10-13 00:46:23,627 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 00:46:23,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:46:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 00:46:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2021-10-13 00:46:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-13 00:46:23,644 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2021-10-13 00:46:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:23,646 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-13 00:46:23,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:23,647 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-13 00:46:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:46:23,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:23,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:23,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:46:23,651 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:23,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-10-13 00:46:23,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:23,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005349865] [2021-10-13 00:46:23,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:23,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:23,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:23,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005349865] [2021-10-13 00:46:23,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005349865] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:23,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:23,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:46:23,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880818236] [2021-10-13 00:46:23,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:46:23,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:23,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:46:23,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:46:23,764 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:23,846 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-10-13 00:46:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:46:23,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-10-13 00:46:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:23,848 INFO L225 Difference]: With dead ends: 56 [2021-10-13 00:46:23,848 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 00:46:23,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:46:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 00:46:23,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-10-13 00:46:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-13 00:46:23,858 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2021-10-13 00:46:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:23,858 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-13 00:46:23,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-13 00:46:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:46:23,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:23,860 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:23,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:46:23,860 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:23,861 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2021-10-13 00:46:23,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:23,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051900845] [2021-10-13 00:46:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:23,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:23,882 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:23,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897357532] [2021-10-13 00:46:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:23,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:23,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:23,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:23,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:46:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:23,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:46:23,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:24,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:24,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051900845] [2021-10-13 00:46:24,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:24,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897357532] [2021-10-13 00:46:24,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897357532] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:24,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:24,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:46:24,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582510348] [2021-10-13 00:46:24,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:46:24,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:46:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:46:24,159 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:24,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:24,303 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2021-10-13 00:46:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:46:24,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-10-13 00:46:24,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:24,306 INFO L225 Difference]: With dead ends: 76 [2021-10-13 00:46:24,306 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 00:46:24,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:46:24,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 00:46:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2021-10-13 00:46:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-10-13 00:46:24,318 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2021-10-13 00:46:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:24,319 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-10-13 00:46:24,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-10-13 00:46:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:46:24,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:24,331 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:24,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:24,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:24,545 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:24,546 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2021-10-13 00:46:24,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:24,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825195449] [2021-10-13 00:46:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:24,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:24,564 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:24,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834040091] [2021-10-13 00:46:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:24,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:24,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:24,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:24,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:46:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:24,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:46:24,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:25,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:25,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825195449] [2021-10-13 00:46:25,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:25,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834040091] [2021-10-13 00:46:25,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834040091] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:25,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:25,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:46:25,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014328637] [2021-10-13 00:46:25,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:46:25,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:46:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:46:25,145 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:25,409 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2021-10-13 00:46:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:46:25,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 18 [2021-10-13 00:46:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:25,411 INFO L225 Difference]: With dead ends: 53 [2021-10-13 00:46:25,411 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 00:46:25,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.2ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:46:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 00:46:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-13 00:46:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-10-13 00:46:25,420 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 18 [2021-10-13 00:46:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:25,420 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-10-13 00:46:25,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-10-13 00:46:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:46:25,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:25,422 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:25,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:25,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:25,636 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:25,637 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2021-10-13 00:46:25,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:25,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473169367] [2021-10-13 00:46:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:25,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:25,655 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:25,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888233282] [2021-10-13 00:46:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:25,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:25,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:25,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:25,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:46:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:25,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:46:25,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:26,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:26,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473169367] [2021-10-13 00:46:26,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:26,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888233282] [2021-10-13 00:46:26,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888233282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:26,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:26,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:46:26,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278447680] [2021-10-13 00:46:26,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:46:26,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:26,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:46:26,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:46:26,164 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:26,523 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2021-10-13 00:46:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:46:26,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2021-10-13 00:46:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:26,525 INFO L225 Difference]: With dead ends: 91 [2021-10-13 00:46:26,525 INFO L226 Difference]: Without dead ends: 69 [2021-10-13 00:46:26,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 238.5ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:46:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-13 00:46:26,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2021-10-13 00:46:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 61 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:26,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-10-13 00:46:26,538 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 22 [2021-10-13 00:46:26,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:26,538 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-10-13 00:46:26,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-10-13 00:46:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 00:46:26,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:26,540 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:26,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:26,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:26,768 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:26,768 INFO L82 PathProgramCache]: Analyzing trace with hash 941114475, now seen corresponding path program 1 times [2021-10-13 00:46:26,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:26,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083804899] [2021-10-13 00:46:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:26,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:26,778 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:26,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879174797] [2021-10-13 00:46:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:26,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:26,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:26,780 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:26,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:46:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:26,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:46:26,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:27,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:27,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083804899] [2021-10-13 00:46:27,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:27,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879174797] [2021-10-13 00:46:27,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879174797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:27,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:27,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:46:27,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772174294] [2021-10-13 00:46:27,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:46:27,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:27,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:46:27,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:46:27,767 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:28,239 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-10-13 00:46:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:46:28,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 25 [2021-10-13 00:46:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:28,240 INFO L225 Difference]: With dead ends: 73 [2021-10-13 00:46:28,240 INFO L226 Difference]: Without dead ends: 62 [2021-10-13 00:46:28,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 331.3ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:46:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-13 00:46:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-13 00:46:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-10-13 00:46:28,253 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 25 [2021-10-13 00:46:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:28,253 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-10-13 00:46:28,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-10-13 00:46:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 00:46:28,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:28,255 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:28,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:28,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:28,473 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:28,473 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2021-10-13 00:46:28,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:28,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284799648] [2021-10-13 00:46:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:28,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:28,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:28,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551171462] [2021-10-13 00:46:28,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:46:28,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:28,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:28,492 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:28,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:46:28,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:46:28,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:46:28,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:46:28,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:29,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:29,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284799648] [2021-10-13 00:46:29,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:29,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551171462] [2021-10-13 00:46:29,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551171462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:29,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:29,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:46:29,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521020487] [2021-10-13 00:46:29,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:46:29,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:46:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:46:29,385 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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) [2021-10-13 00:46:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:30,186 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2021-10-13 00:46:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:46:30,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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) Word has length 29 [2021-10-13 00:46:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:30,188 INFO L225 Difference]: With dead ends: 113 [2021-10-13 00:46:30,188 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 00:46:30,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 317.7ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:46:30,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 00:46:30,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2021-10-13 00:46:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 85 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2021-10-13 00:46:30,207 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 29 [2021-10-13 00:46:30,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:30,208 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2021-10-13 00:46:30,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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) [2021-10-13 00:46:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2021-10-13 00:46:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 00:46:30,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:30,210 INFO L512 BasicCegarLoop]: 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] [2021-10-13 00:46:30,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:30,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-13 00:46:30,437 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:30,437 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2021-10-13 00:46:30,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:30,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414973021] [2021-10-13 00:46:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:30,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:30,454 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:30,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556419091] [2021-10-13 00:46:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:30,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:30,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:30,456 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:30,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:46:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:30,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 00:46:30,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:31,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:31,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414973021] [2021-10-13 00:46:31,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:31,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556419091] [2021-10-13 00:46:31,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556419091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:31,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:31,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:46:31,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399298801] [2021-10-13 00:46:31,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:46:31,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:46:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:46:31,606 INFO L87 Difference]: Start difference. First operand 86 states and 98 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) [2021-10-13 00:46:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:31,932 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-10-13 00:46:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:46:31,932 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 31 [2021-10-13 00:46:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:31,935 INFO L225 Difference]: With dead ends: 92 [2021-10-13 00:46:31,935 INFO L226 Difference]: Without dead ends: 90 [2021-10-13 00:46:31,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 248.7ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:46:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-13 00:46:31,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2021-10-13 00:46:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2021-10-13 00:46:31,952 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 31 [2021-10-13 00:46:31,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:31,953 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2021-10-13 00:46:31,953 INFO L471 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) [2021-10-13 00:46:31,954 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2021-10-13 00:46:31,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:46:31,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:31,955 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:32,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:32,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:32,169 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:32,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:32,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1961752720, now seen corresponding path program 2 times [2021-10-13 00:46:32,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:32,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304195828] [2021-10-13 00:46:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:32,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:32,186 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:32,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21128330] [2021-10-13 00:46:32,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:46:32,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:32,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:32,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:32,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:46:32,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:46:32,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:46:32,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:46:32,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:33,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-13 00:46:33,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:33,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304195828] [2021-10-13 00:46:33,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:33,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21128330] [2021-10-13 00:46:33,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21128330] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:46:33,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:46:33,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 00:46:33,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128303575] [2021-10-13 00:46:33,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:46:33,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:33,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:46:33,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:46:33,053 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:33,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:33,369 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2021-10-13 00:46:33,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:46:33,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 [2021-10-13 00:46:33,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:33,371 INFO L225 Difference]: With dead ends: 117 [2021-10-13 00:46:33,371 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 00:46:33,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 211.5ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:46:33,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 00:46:33,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-10-13 00:46:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.2) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-10-13 00:46:33,389 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 32 [2021-10-13 00:46:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:33,390 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-10-13 00:46:33,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-10-13 00:46:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:46:33,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:33,392 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:33,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:33,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 00:46:33,609 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:33,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:33,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1455744328, now seen corresponding path program 1 times [2021-10-13 00:46:33,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:33,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428650764] [2021-10-13 00:46:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:33,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:33,626 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:33,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456267193] [2021-10-13 00:46:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:33,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:33,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:33,628 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:33,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:46:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:46:33,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:46:33,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:34,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:34,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428650764] [2021-10-13 00:46:34,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:34,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456267193] [2021-10-13 00:46:34,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456267193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:34,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:34,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:46:34,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511295872] [2021-10-13 00:46:34,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:46:34,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:34,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:46:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:46:34,742 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:35,306 INFO L93 Difference]: Finished difference Result 161 states and 182 transitions. [2021-10-13 00:46:35,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:46:35,307 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-10-13 00:46:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:35,308 INFO L225 Difference]: With dead ends: 161 [2021-10-13 00:46:35,309 INFO L226 Difference]: Without dead ends: 104 [2021-10-13 00:46:35,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 224.8ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:46:35,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-13 00:46:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2021-10-13 00:46:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.216867469879518) internal successors, (101), 87 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2021-10-13 00:46:35,322 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 36 [2021-10-13 00:46:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:35,323 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2021-10-13 00:46:35,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2021-10-13 00:46:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:46:35,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:35,325 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:46:35,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:35,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 00:46:35,545 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:35,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1277177884, now seen corresponding path program 3 times [2021-10-13 00:46:35,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:35,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497109150] [2021-10-13 00:46:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:35,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:35,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:35,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933887250] [2021-10-13 00:46:35,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:46:35,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:35,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:35,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:35,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:46:35,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:46:35,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:46:35,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:46:35,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 00:46:39,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:39,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497109150] [2021-10-13 00:46:39,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:39,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933887250] [2021-10-13 00:46:39,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933887250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:39,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:39,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:46:39,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961492730] [2021-10-13 00:46:39,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:46:39,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:46:39,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-10-13 00:46:39,068 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:56,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:46:56,831 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2021-10-13 00:46:56,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:46:56,832 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), 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 36 [2021-10-13 00:46:56,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:46:56,833 INFO L225 Difference]: With dead ends: 96 [2021-10-13 00:46:56,834 INFO L226 Difference]: Without dead ends: 86 [2021-10-13 00:46:56,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 7299.2ms TimeCoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2021-10-13 00:46:56,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-13 00:46:56,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-13 00:46:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2021-10-13 00:46:56,847 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 36 [2021-10-13 00:46:56,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:46:56,847 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2021-10-13 00:46:56,847 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:46:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2021-10-13 00:46:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:46:56,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:46:56,849 INFO L512 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] [2021-10-13 00:46:56,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:46:57,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 00:46:57,065 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:46:57,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:46:57,065 INFO L82 PathProgramCache]: Analyzing trace with hash -642892963, now seen corresponding path program 2 times [2021-10-13 00:46:57,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:46:57,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418938812] [2021-10-13 00:46:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:46:57,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:46:57,095 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:46:57,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588914575] [2021-10-13 00:46:57,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:46:57,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:46:57,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:46:57,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:46:57,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:46:57,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:46:57,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:46:57,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 00:46:57,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:46:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:46:58,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:46:58,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418938812] [2021-10-13 00:46:58,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:46:58,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588914575] [2021-10-13 00:46:58,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588914575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:46:58,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:46:58,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-13 00:46:58,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076987366] [2021-10-13 00:46:58,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:46:58,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:46:58,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:46:58,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:46:58,904 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:47:00,309 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2021-10-13 00:47:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:47:00,310 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 38 [2021-10-13 00:47:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:47:00,311 INFO L225 Difference]: With dead ends: 112 [2021-10-13 00:47:00,311 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 00:47:00,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 764.3ms TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:47:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 00:47:00,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 97. [2021-10-13 00:47:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 96 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2021-10-13 00:47:00,326 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 38 [2021-10-13 00:47:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:47:00,327 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2021-10-13 00:47:00,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2021-10-13 00:47:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 00:47:00,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:47:00,329 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:47:00,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:47:00,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 00:47:00,553 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:47:00,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:47:00,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1707275894, now seen corresponding path program 3 times [2021-10-13 00:47:00,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:47:00,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136753650] [2021-10-13 00:47:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:00,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:47:00,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:47:00,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293776265] [2021-10-13 00:47:00,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:47:00,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:47:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:47:00,572 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:47:00,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:47:01,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:47:01,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:47:01,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-13 00:47:01,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:47:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:02,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:47:02,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136753650] [2021-10-13 00:47:02,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:47:02,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293776265] [2021-10-13 00:47:02,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293776265] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:47:02,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:47:02,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-13 00:47:02,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456233822] [2021-10-13 00:47:02,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:47:02,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:47:02,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:47:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:47:02,788 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:04,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:47:04,600 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2021-10-13 00:47:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:47:04,601 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-13 00:47:04,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:47:04,602 INFO L225 Difference]: With dead ends: 134 [2021-10-13 00:47:04,602 INFO L226 Difference]: Without dead ends: 103 [2021-10-13 00:47:04,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1113.5ms TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:47:04,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-13 00:47:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 92. [2021-10-13 00:47:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 91 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-10-13 00:47:04,615 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 44 [2021-10-13 00:47:04,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:47:04,616 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-10-13 00:47:04,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2021-10-13 00:47:04,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 00:47:04,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:47:04,618 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:47:04,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:47:04,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 00:47:04,829 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:47:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:47:04,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1027491960, now seen corresponding path program 4 times [2021-10-13 00:47:04,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:47:04,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438497407] [2021-10-13 00:47:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:04,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:47:04,862 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:47:04,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110811594] [2021-10-13 00:47:04,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:47:04,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:47:04,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:47:04,864 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:47:04,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:47:05,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:47:05,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:47:05,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 00:47:05,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:47:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:06,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:47:06,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438497407] [2021-10-13 00:47:06,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:47:06,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110811594] [2021-10-13 00:47:06,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110811594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:47:06,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:47:06,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-13 00:47:06,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453205727] [2021-10-13 00:47:06,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:47:06,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:47:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:47:06,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:47:06,833 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:47:07,642 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2021-10-13 00:47:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:47:07,643 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2021-10-13 00:47:07,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:47:07,644 INFO L225 Difference]: With dead ends: 131 [2021-10-13 00:47:07,644 INFO L226 Difference]: Without dead ends: 129 [2021-10-13 00:47:07,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 410.7ms TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:47:07,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-13 00:47:07,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2021-10-13 00:47:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 106 states have (on average 1.169811320754717) internal successors, (124), 109 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2021-10-13 00:47:07,661 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 45 [2021-10-13 00:47:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:47:07,661 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2021-10-13 00:47:07,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2021-10-13 00:47:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-13 00:47:07,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:47:07,663 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:47:07,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:47:07,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 00:47:07,869 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:47:07,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:47:07,869 INFO L82 PathProgramCache]: Analyzing trace with hash -14469331, now seen corresponding path program 1 times [2021-10-13 00:47:07,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:47:07,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493046050] [2021-10-13 00:47:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:07,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:47:07,887 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:47:07,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132987564] [2021-10-13 00:47:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:07,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:47:07,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:47:07,889 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:47:07,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 00:47:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:47:08,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 00:47:08,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:47:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:10,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:47:10,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493046050] [2021-10-13 00:47:10,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:47:10,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132987564] [2021-10-13 00:47:10,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132987564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:47:10,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:47:10,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 00:47:10,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351730301] [2021-10-13 00:47:10,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:47:10,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:47:10,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:47:10,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:47:10,207 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:11,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:47:11,439 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2021-10-13 00:47:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 00:47:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 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 46 [2021-10-13 00:47:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:47:11,441 INFO L225 Difference]: With dead ends: 136 [2021-10-13 00:47:11,441 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 00:47:11,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1025.3ms TimeCoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2021-10-13 00:47:11,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 00:47:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2021-10-13 00:47:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 106 states have (on average 1.150943396226415) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:11,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-10-13 00:47:11,457 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 46 [2021-10-13 00:47:11,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:47:11,458 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-10-13 00:47:11,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:11,458 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-10-13 00:47:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 00:47:11,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:47:11,459 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:47:11,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:47:11,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:47:11,681 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:47:11,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:47:11,681 INFO L82 PathProgramCache]: Analyzing trace with hash -422546789, now seen corresponding path program 2 times [2021-10-13 00:47:11,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:47:11,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978460891] [2021-10-13 00:47:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:11,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:47:11,691 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:47:11,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848596790] [2021-10-13 00:47:11,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:47:11,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:47:11,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:47:11,698 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:47:11,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 00:47:12,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:47:12,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:47:12,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 00:47:12,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:47:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:13,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:47:13,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978460891] [2021-10-13 00:47:13,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:47:13,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848596790] [2021-10-13 00:47:13,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848596790] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:47:13,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:47:13,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-13 00:47:13,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403735452] [2021-10-13 00:47:13,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:47:13,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:47:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:47:13,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:47:13,973 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:15,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:47:15,409 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2021-10-13 00:47:15,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:47:15,410 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 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 47 [2021-10-13 00:47:15,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:47:15,411 INFO L225 Difference]: With dead ends: 131 [2021-10-13 00:47:15,411 INFO L226 Difference]: Without dead ends: 93 [2021-10-13 00:47:15,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1356.5ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-10-13 00:47:15,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-13 00:47:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2021-10-13 00:47:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 1.1046511627906976) internal successors, (95), 89 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-10-13 00:47:15,424 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 47 [2021-10-13 00:47:15,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:47:15,425 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-10-13 00:47:15,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:47:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-10-13 00:47:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 00:47:15,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:47:15,426 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:47:15,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:47:15,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 00:47:15,641 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:47:15,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:47:15,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1554139002, now seen corresponding path program 2 times [2021-10-13 00:47:15,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:47:15,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486562956] [2021-10-13 00:47:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:15,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:47:15,671 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:47:15,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755536991] [2021-10-13 00:47:15,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:47:15,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:47:15,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:47:15,680 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:47:15,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 00:47:16,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:47:16,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:47:16,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:47:16,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:47:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-13 00:47:48,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:47:48,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486562956] [2021-10-13 00:47:48,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:47:48,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755536991] [2021-10-13 00:47:48,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755536991] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:47:48,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:47:48,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 00:47:48,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310564596] [2021-10-13 00:47:48,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:47:48,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:47:48,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:47:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=40, Unknown=3, NotChecked=0, Total=56 [2021-10-13 00:47:48,272 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:48:00,818 WARN L207 SmtUtils]: Spent 12.50 s on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-10-13 00:48:17,156 WARN L207 SmtUtils]: Spent 16.30 s on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-10-13 00:48:32,001 WARN L207 SmtUtils]: Spent 14.57 s on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-10-13 00:48:46,344 WARN L207 SmtUtils]: Spent 14.22 s on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-10-13 00:49:09,091 WARN L207 SmtUtils]: Spent 22.52 s on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2021-10-13 00:49:48,858 WARN L207 SmtUtils]: Spent 14.50 s on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-10-13 00:50:05,389 WARN L207 SmtUtils]: Spent 16.47 s on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2021-10-13 00:50:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:19,627 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2021-10-13 00:50:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:50:19,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 49 [2021-10-13 00:50:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:19,628 INFO L225 Difference]: With dead ends: 94 [2021-10-13 00:50:19,629 INFO L226 Difference]: Without dead ends: 71 [2021-10-13 00:50:19,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 133970.6ms TimeCoverageRelationStatistics Valid=75, Invalid=155, Unknown=10, NotChecked=0, Total=240 [2021-10-13 00:50:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-13 00:50:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2021-10-13 00:50:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.064516129032258) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-10-13 00:50:19,639 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 49 [2021-10-13 00:50:19,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:19,640 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-10-13 00:50:19,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:19,640 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-10-13 00:50:19,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 00:50:19,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:19,641 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:19,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:19,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 00:50:19,842 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:19,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1461163621, now seen corresponding path program 5 times [2021-10-13 00:50:19,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:19,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402566267] [2021-10-13 00:50:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:19,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:19,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:19,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875742580] [2021-10-13 00:50:19,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:50:19,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:19,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:19,866 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:19,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 00:50:20,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 00:50:20,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:50:20,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 00:50:20,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:22,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:22,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402566267] [2021-10-13 00:50:22,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:22,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875742580] [2021-10-13 00:50:22,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875742580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:22,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:22,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-13 00:50:22,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38562507] [2021-10-13 00:50:22,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:50:22,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:22,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:50:22,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:50:22,826 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:27,268 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2021-10-13 00:50:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:50:27,268 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 00:50:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:27,269 INFO L225 Difference]: With dead ends: 97 [2021-10-13 00:50:27,269 INFO L226 Difference]: Without dead ends: 79 [2021-10-13 00:50:27,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 4225.0ms TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:50:27,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-13 00:50:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2021-10-13 00:50:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 65 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-10-13 00:50:27,280 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 51 [2021-10-13 00:50:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:27,280 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-10-13 00:50:27,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-10-13 00:50:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:50:27,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:27,282 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:27,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-13 00:50:27,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:27,497 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:27,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:27,497 INFO L82 PathProgramCache]: Analyzing trace with hash -218649978, now seen corresponding path program 1 times [2021-10-13 00:50:27,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:27,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185211180] [2021-10-13 00:50:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:27,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:27,517 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:27,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302467621] [2021-10-13 00:50:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:27,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:27,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:27,519 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:27,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 00:50:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:28,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 00:50:28,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:30,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:30,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185211180] [2021-10-13 00:50:30,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:30,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302467621] [2021-10-13 00:50:30,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302467621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:30,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:30,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 00:50:30,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624278915] [2021-10-13 00:50:30,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:50:30,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:30,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:50:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:50:30,126 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:31,270 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2021-10-13 00:50:31,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 00:50:31,271 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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 53 [2021-10-13 00:50:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:31,271 INFO L225 Difference]: With dead ends: 85 [2021-10-13 00:50:31,271 INFO L226 Difference]: Without dead ends: 58 [2021-10-13 00:50:31,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 908.5ms TimeCoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2021-10-13 00:50:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-13 00:50:31,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-13 00:50:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0) internal successors, (57), 57 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 57 transitions. [2021-10-13 00:50:31,286 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 57 transitions. Word has length 53 [2021-10-13 00:50:31,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:31,286 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 57 transitions. [2021-10-13 00:50:31,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 57 transitions. [2021-10-13 00:50:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 00:50:31,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:31,287 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:31,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:31,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:31,487 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:31,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:31,488 INFO L82 PathProgramCache]: Analyzing trace with hash 196796624, now seen corresponding path program 1 times [2021-10-13 00:50:31,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:31,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013524313] [2021-10-13 00:50:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:31,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:31,502 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:31,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014460456] [2021-10-13 00:50:31,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:31,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:31,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:31,506 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:31,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 00:50:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:32,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-13 00:50:32,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:34,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:34,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013524313] [2021-10-13 00:50:34,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:34,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014460456] [2021-10-13 00:50:34,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014460456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:34,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:34,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-13 00:50:34,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704017905] [2021-10-13 00:50:34,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:50:34,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:50:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:50:34,661 INFO L87 Difference]: Start difference. First operand 58 states and 57 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:35,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:35,693 INFO L93 Difference]: Finished difference Result 58 states and 57 transitions. [2021-10-13 00:50:35,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:50:35,694 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 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 57 [2021-10-13 00:50:35,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:35,694 INFO L225 Difference]: With dead ends: 58 [2021-10-13 00:50:35,695 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:50:35,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 829.6ms TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:50:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:50:35,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:50:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:50:35,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-10-13 00:50:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:35,697 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:50:35,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:50:35,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:50:35,701 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:50:35,702 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:50:35,702 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:50:35,702 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:50:35,702 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:50:35,703 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:50:35,703 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:50:35,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:35,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-13 00:50:35,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:50:35,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:35,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:36,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:36,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:36,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:36,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:36,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:36,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:36,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:41,856 WARN L207 SmtUtils]: Spent 5.48 s on a formula simplification. DAG size of input: 168 DAG size of output: 97 [2021-10-13 00:50:57,759 WARN L207 SmtUtils]: Spent 15.90 s on a formula simplification. DAG size of input: 195 DAG size of output: 84 [2021-10-13 00:51:02,073 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:02,074 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:51:02,074 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:51:02,074 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:51:02,074 INFO L853 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse7 (mod ULTIMATE.start_main_~B~0 4294967296)) (.cse8 (mod ULTIMATE.start_main_~A~0 4294967296))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 .cse7)) .cse8)) (.cse3 (<= 1 .cse7)) (.cse4 (= ULTIMATE.start_main_~r~0 .cse8)) (.cse5 (= (* .cse7 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0)) (.cse6 (< (div (+ (* ULTIMATE.start_main_~r~0 (- 1)) 5) (- 4294967296)) 1))) (or (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~p~0 2)) (and .cse0 (<= .cse7 5) .cse3 (= ULTIMATE.start_main_~d~0 .cse7) (= ULTIMATE.start_main_~q~0 0) .cse4 .cse5 .cse6) (and .cse0 (<= (* 2 .cse7) ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 (<= (* 4 .cse7) ULTIMATE.start_main_~r~0) .cse4 (= ULTIMATE.start_main_~d~0 (* 8 .cse7)) .cse5 .cse6)))) [2021-10-13 00:51:02,074 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:02,075 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:51:02,075 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:51:02,075 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-13 00:51:02,075 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-10-13 00:51:02,075 INFO L857 garLoopResultBuilder]: For program point L12-4(line 12) no Hoare annotation was computed. [2021-10-13 00:51:02,075 INFO L860 garLoopResultBuilder]: At program point L62(lines 22 63) the Hoare annotation is: true [2021-10-13 00:51:02,075 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:02,076 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2021-10-13 00:51:02,076 INFO L857 garLoopResultBuilder]: For program point L54-2(lines 22 63) no Hoare annotation was computed. [2021-10-13 00:51:02,076 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-10-13 00:51:02,076 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:02,076 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:02,077 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:02,077 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse7 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse2 (* 2 .cse7)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 .cse7)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 (mod ULTIMATE.start_main_~A~0 4294967296))) (.cse6 (< (div (+ (* ULTIMATE.start_main_~r~0 (- 1)) 5) (- 4294967296)) 1))) (or (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse1 (= .cse2 ULTIMATE.start_main_~d~0) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~p~0 2)) (and .cse0 (<= .cse2 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 (= (* 2 (* (div ULTIMATE.start_main_~p~0 2) .cse7)) ULTIMATE.start_main_~d~0) .cse4 .cse5 .cse6) (and .cse0 .cse1 (<= .cse7 5) .cse3 (= ULTIMATE.start_main_~d~0 .cse7) .cse4 .cse5 (= (* .cse7 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0) .cse6) (and .cse0 .cse1 .cse3 (<= (* 4 .cse7) ULTIMATE.start_main_~r~0) .cse4 (= ULTIMATE.start_main_~p~0 8) .cse5 (= ULTIMATE.start_main_~d~0 (* 8 .cse7)) .cse6)))) [2021-10-13 00:51:02,077 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:02,077 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse7 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse2 (* 2 .cse7)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 .cse7)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 (mod ULTIMATE.start_main_~A~0 4294967296))) (.cse6 (< (div (+ (* ULTIMATE.start_main_~r~0 (- 1)) 5) (- 4294967296)) 1))) (or (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse1 (= .cse2 ULTIMATE.start_main_~d~0) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~p~0 2)) (and .cse0 (<= .cse2 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 (= (* 2 (* (div ULTIMATE.start_main_~p~0 2) .cse7)) ULTIMATE.start_main_~d~0) .cse4 .cse5 .cse6) (and .cse0 .cse1 (<= .cse7 5) .cse3 (= ULTIMATE.start_main_~d~0 .cse7) .cse4 .cse5 (= (* .cse7 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0) .cse6) (and .cse0 .cse1 .cse3 (<= (* 4 .cse7) ULTIMATE.start_main_~r~0) .cse4 (= ULTIMATE.start_main_~p~0 8) .cse5 (= ULTIMATE.start_main_~d~0 (* 8 .cse7)) .cse6)))) [2021-10-13 00:51:02,077 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:02,077 INFO L853 garLoopResultBuilder]: At program point L15-8(line 40) the Hoare annotation is: (let ((.cse1 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 .cse1)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 (mod ULTIMATE.start_main_~A~0 4294967296))) (.cse6 (= (* .cse1 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0)) (.cse7 (< (div (+ (* ULTIMATE.start_main_~r~0 (- 1)) 5) (- 4294967296)) 1))) (or (and .cse0 (<= .cse1 5) .cse2 .cse3 (= ULTIMATE.start_main_~d~0 .cse1) .cse4 .cse5 .cse6 .cse7) (and .cse0 .cse2 .cse3 (<= (* 4 .cse1) ULTIMATE.start_main_~r~0) .cse4 .cse5 (= ULTIMATE.start_main_~d~0 (* 8 .cse1)) .cse6 .cse7) (and .cse0 (<= (* 2 .cse1) ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~p~0 2))))) [2021-10-13 00:51:02,078 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:02,078 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse3 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse26 (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse24 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) (.cse1 (* 2 .cse3)) (.cse19 (* ULTIMATE.start_main_~r~0 (- 1))) (.cse16 (mod ULTIMATE.start_main_~A~0 4294967296))) (let ((.cse11 (= (div (+ .cse19 .cse16) 2) ULTIMATE.start_main_~d~0)) (.cse18 (<= .cse1 .cse16)) (.cse10 (* 4 .cse3)) (.cse20 (= .cse24 .cse16)) (.cse8 (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 .cse3)) .cse16)) (.cse21 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse9 (<= 0 ULTIMATE.start_main_~r~0)) (.cse7 (<= .cse16 5)) (.cse22 (not .cse26)) (.cse23 (or .cse26 .cse2)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) (.cse25 (= (* .cse3 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0)) (.cse12 (= ULTIMATE.start_main_~p~0 2)) (.cse17 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse13 (<= .cse3 5)) (.cse14 (= ULTIMATE.start_main_~p~0 1)) (.cse15 (= ULTIMATE.start_main_~d~0 .cse3)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 .cse16))) (or (and .cse0 (<= .cse1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) .cse2 (= (* 2 (* (div ULTIMATE.start_main_~p~0 2) .cse3)) ULTIMATE.start_main_~d~0) .cse4 .cse5 .cse6 .cse7) (and (= ULTIMATE.start_main_~q~0 4) .cse0 .cse2 .cse8 .cse9 (< 0 .cse10) .cse7 .cse11 .cse12) (and (<= (mod ULTIMATE.start_main_~r~0 4294967296) 5) .cse0 .cse13 .cse14 .cse2 (< ULTIMATE.start_main_~r~0 4294967296) .cse8 (<= 1 .cse3) .cse9 .cse15 .cse7) (and .cse0 (= (+ .cse1 ULTIMATE.start_main_~r~0) .cse16) .cse17 (= ULTIMATE.start_main_~q~0 2) (< .cse16 .cse10) .cse14 .cse18 .cse7 .cse11) (and .cse0 .cse17 .cse13 (< (div (+ (- 1) .cse19) (- 2)) (+ .cse3 1)) .cse14 .cse15 .cse4 .cse5) (and .cse0 .cse17 .cse13 .cse20 .cse21 .cse9 .cse15 (= ULTIMATE.start_main_~q~0 1) .cse6) (and .cse0 (<= .cse10 ULTIMATE.start_main_~r~0) .cse4 (= ULTIMATE.start_main_~p~0 8) .cse5 (= ULTIMATE.start_main_~d~0 (* 8 .cse3)) .cse6 .cse22 .cse23 (< (div (+ .cse19 5) (- 4294967296)) 1)) (and .cse0 .cse2 .cse8 .cse21 .cse18 (< .cse24 .cse10) .cse7 .cse25 .cse12) (and .cse0 .cse20 .cse8 .cse21 .cse9 (= (mod ULTIMATE.start_main_~d~0 4) 0) .cse6 .cse7 .cse22 .cse23) (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse13 .cse2 .cse4 .cse5 .cse6 .cse25 .cse12) (and .cse17 .cse13 .cse14 .cse15 .cse4 .cse5 (< ULTIMATE.start_main_~r~0 .cse3)))))) [2021-10-13 00:51:02,078 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:02,078 INFO L853 garLoopResultBuilder]: At program point L15-14(line 50) the Hoare annotation is: (let ((.cse19 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse24 (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse10 (mod ULTIMATE.start_main_~A~0 4294967296)) (.cse4 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse3 (* ULTIMATE.start_main_~r~0 (- 1))) (.cse18 (* 2 .cse4)) (.cse9 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) (.cse14 (* 4 .cse4)) (.cse23 (<= 1 .cse4)) (.cse22 (= ULTIMATE.start_main_~p~0 2)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= .cse4 5)) (.cse5 (= ULTIMATE.start_main_~p~0 1)) (.cse6 (= ULTIMATE.start_main_~d~0 .cse4)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 .cse10)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse21 (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 .cse4)) .cse10)) (.cse11 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse12 (<= 0 ULTIMATE.start_main_~r~0)) (.cse13 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) (.cse20 (<= .cse10 5)) (.cse15 (not .cse24)) (.cse16 (or .cse24 .cse19)) (.cse17 (= (* .cse4 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0))) (or (and .cse0 .cse1 .cse2 (< (div (+ (- 1) .cse3) (- 2)) (+ .cse4 1)) .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse2 (= .cse9 .cse10) .cse11 .cse12 .cse6 (= ULTIMATE.start_main_~q~0 1) .cse13) (and .cse0 (<= .cse14 ULTIMATE.start_main_~r~0) .cse7 .cse8 (= ULTIMATE.start_main_~d~0 (* 8 .cse4)) .cse13 .cse15 .cse16 .cse17 (< (div (+ .cse3 5) (- 4294967296)) 1)) (and .cse0 (<= .cse18 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) .cse19 .cse7 .cse8 .cse13 .cse20 .cse17) (and .cse0 .cse19 .cse21 .cse11 (<= .cse18 .cse10) (< .cse9 .cse14) .cse20 .cse17 .cse22) (and (<= (mod ULTIMATE.start_main_~r~0 4294967296) 5) .cse0 .cse2 .cse19 (< ULTIMATE.start_main_~r~0 4294967296) .cse21 .cse23 .cse12 .cse6 .cse20 .cse17) (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse2 .cse19 .cse7 .cse8 .cse13 .cse17 .cse22) (and (= ULTIMATE.start_main_~q~0 4) .cse0 .cse2 .cse19 .cse21 .cse23 .cse12 .cse20 .cse17 .cse22) (and .cse1 .cse2 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_main_~r~0 .cse4)) (and .cse0 .cse21 .cse11 .cse12 (= (mod ULTIMATE.start_main_~d~0 4) 0) .cse13 .cse20 .cse15 .cse16 .cse17)))) [2021-10-13 00:51:02,078 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:02,079 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:51:02,079 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse1 (= ULTIMATE.start_main_~d~0 .cse0)) (.cse2 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= .cse0 5) (<= 1 .cse0) .cse1 .cse2) (and (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2)))) [2021-10-13 00:51:02,079 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:02,079 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-13 00:51:02,079 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:02,080 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:02,080 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:02,080 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:02,080 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:02,080 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:02,080 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:02,080 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:02,080 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:51:02,080 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:02,085 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:51:02,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:51:02 BoogieIcfgContainer [2021-10-13 00:51:02,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:51:02,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:51:02,134 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:51:02,134 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:51:02,135 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:46:22" (3/4) ... [2021-10-13 00:51:02,138 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:51:02,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-13 00:51:02,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:51:02,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:51:02,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:51:02,222 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:51:02,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:51:02,224 INFO L168 Benchmark]: Toolchain (without parser) took 280447.38 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 81.3 MB in the beginning and 49.7 MB in the end (delta: 31.6 MB). Peak memory consumption was 83.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:02,224 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:51:02,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.35 ms. Allocated memory is still 113.2 MB. Free memory was 81.2 MB in the beginning and 71.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:02,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.80 ms. Allocated memory is still 113.2 MB. Free memory was 71.2 MB in the beginning and 69.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:02,226 INFO L168 Benchmark]: Boogie Preprocessor took 42.96 ms. Allocated memory is still 113.2 MB. Free memory was 69.5 MB in the beginning and 68.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:51:02,226 INFO L168 Benchmark]: RCFGBuilder took 501.49 ms. Allocated memory is still 113.2 MB. Free memory was 68.2 MB in the beginning and 56.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:02,227 INFO L168 Benchmark]: TraceAbstraction took 279414.02 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 56.2 MB in the beginning and 53.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 63.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:02,228 INFO L168 Benchmark]: Witness Printer took 89.24 ms. Allocated memory is still 163.6 MB. Free memory was 53.9 MB in the beginning and 49.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:02,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.35 ms. Allocated memory is still 113.2 MB. Free memory was 81.2 MB in the beginning and 71.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.80 ms. Allocated memory is still 113.2 MB. Free memory was 71.2 MB in the beginning and 69.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.96 ms. Allocated memory is still 113.2 MB. Free memory was 69.5 MB in the beginning and 68.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 501.49 ms. Allocated memory is still 113.2 MB. Free memory was 68.2 MB in the beginning and 56.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 279414.02 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 56.2 MB in the beginning and 53.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 63.1 MB. Max. memory is 16.1 GB. * Witness Printer took 89.24 ms. Allocated memory is still 163.6 MB. Free memory was 53.9 MB in the beginning and 49.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 279281.1ms, OverallIterations: 21, TraceHistogramMax: 4, EmptinessCheckTime: 43.0ms, AutomataDifference: 186077.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 26168.2ms, InitialAbstractionConstructionTime: 13.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 553 SDtfs, 1626 SDslu, 1815 SDs, 0 SdLazy, 4194 SolverSat, 650 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 44437.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 827 GetRequests, 514 SyntacticMatches, 5 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 153715.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=15, InterpolantAutomatonStates: 252, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 271.9ms AutomataMinimizationTime, 21 MinimizatonAttempts, 156 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 55 NumberOfFragments, 1781 HoareAnnotationTreeSize, 9 FomulaSimplifications, 14453 FormulaSimplificationTreeSizeReduction, 440.2ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 4148 FormulaSimplificationTreeSizeReductionInter, 25718.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 171.1ms SsaConstructionTime, 1223.6ms SatisfiabilityAnalysisTime, 54205.6ms InterpolantComputationTime, 709 NumberOfCodeBlocks, 655 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 688 ConstructedInterpolants, 3 QuantifiedInterpolants, 12203 SizeOfPredicates, 165 NumberOfNonLiveVariables, 2345 ConjunctsInSsa, 515 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 101/503 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && 2 * (p / 2 * (B % 4294967296)) == d) && q == 0) && r == A % 4294967296) && r < d) && A % 4294967296 <= 5) || ((((((((q == 4 && cond == 1) && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && 0 <= r) && 0 < 4 * (B % 4294967296)) && A % 4294967296 <= 5) && (r * -1 + A % 4294967296) / 2 == d) && p == 2)) || ((((((((((r % 4294967296 <= 5 && cond == 1) && B % 4294967296 <= 5) && p == 1) && 1 == cond) && r < 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && 0 <= r) && d == B % 4294967296) && A % 4294967296 <= 5)) || ((((((((cond == 1 && 2 * (B % 4294967296) + r == A % 4294967296) && 1 <= cond) && q == 2) && A % 4294967296 < 4 * (B % 4294967296)) && p == 1) && 2 * (B % 4294967296) <= A % 4294967296) && A % 4294967296 <= 5) && (r * -1 + A % 4294967296) / 2 == d)) || (((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && (-1 + r * -1) / -2 < B % 4294967296 + 1) && p == 1) && d == B % 4294967296) && q == 0) && r == A % 4294967296)) || ((((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && d + r == A % 4294967296) && q == p) && 0 <= r) && d == B % 4294967296) && q == 1) && r < d)) || (((((((((cond == 1 && 4 * (B % 4294967296) <= r) && q == 0) && p == 8) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && r < d) && !(0 == cond)) && (0 == cond || 1 == cond)) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && q == p) && 2 * (B % 4294967296) <= A % 4294967296) && d + r < 4 * (B % 4294967296)) && A % 4294967296 <= 5) && B % 4294967296 * p == d) && p == 2)) || (((((((((cond == 1 && d + r == A % 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && q == p) && 0 <= r) && d % 4 == 0) && r < d) && A % 4294967296 <= 5) && !(0 == cond)) && (0 == cond || 1 == cond))) || ((((((((d * -1 / -2 <= r && cond == 1) && B % 4294967296 <= 5) && 1 == cond) && q == 0) && r == A % 4294967296) && r < d) && B % 4294967296 * p == d) && p == 2)) || ((((((1 <= cond && B % 4294967296 <= 5) && p == 1) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && r < B % 4294967296) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((cond == 1 && B % 4294967296 <= 5) && 1 <= B % 4294967296) && d == B % 4294967296) && !(0 == cond)) || ((p == 1 && d == B % 4294967296) && !(0 == cond)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && (-1 + r * -1) / -2 < B % 4294967296 + 1) && p == 1) && d == B % 4294967296) && q == 0) && r == A % 4294967296) || ((((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && d + r == A % 4294967296) && q == p) && 0 <= r) && d == B % 4294967296) && q == 1) && r < d)) || (((((((((cond == 1 && 4 * (B % 4294967296) <= r) && q == 0) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && r < d) && !(0 == cond)) && (0 == cond || 1 == cond)) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && q == 0) && r == A % 4294967296) && r < d) && A % 4294967296 <= 5) && B % 4294967296 * p == d)) || ((((((((cond == 1 && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && q == p) && 2 * (B % 4294967296) <= A % 4294967296) && d + r < 4 * (B % 4294967296)) && A % 4294967296 <= 5) && B % 4294967296 * p == d) && p == 2)) || ((((((((((r % 4294967296 <= 5 && cond == 1) && B % 4294967296 <= 5) && 1 == cond) && r < 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && 0 <= r) && d == B % 4294967296) && A % 4294967296 <= 5) && B % 4294967296 * p == d)) || ((((((((d * -1 / -2 <= r && cond == 1) && B % 4294967296 <= 5) && 1 == cond) && q == 0) && r == A % 4294967296) && r < d) && B % 4294967296 * p == d) && p == 2)) || (((((((((q == 4 && cond == 1) && B % 4294967296 <= 5) && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && 0 <= r) && A % 4294967296 <= 5) && B % 4294967296 * p == d) && p == 2)) || ((((((1 <= cond && B % 4294967296 <= 5) && p == 1) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && r < B % 4294967296)) || (((((((((cond == 1 && r + q * (B % 4294967296) == A % 4294967296) && q == p) && 0 <= r) && d % 4 == 0) && r < d) && A % 4294967296 <= 5) && !(0 == cond)) && (0 == cond || 1 == cond)) && B % 4294967296 * p == d) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && B % 4294967296 <= 5) && 1 == cond) && 1 <= B % 4294967296) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1) || ((((((((cond == 1 && 1 == cond) && 1 <= B % 4294967296) && 4 * (B % 4294967296) <= r) && q == 0) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && 1 <= B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((d * -1 / -2 <= r && cond == 1) && 1 == cond) && 1 <= B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1) && p == 2) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((((d * -1 / -2 <= r && cond == 1) && 1 <= cond) && 2 * (B % 4294967296) == d) && 1 <= B % 4294967296) && q == 0) && r == A % 4294967296) && (r * -1 + 5) / -4294967296 < 1) && p == 2) || ((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && 1 <= B % 4294967296) && 2 * (p / 2 * (B % 4294967296)) == d) && q == 0) && r == A % 4294967296) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && 1 <= B % 4294967296) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 <= cond) && 1 <= B % 4294967296) && 4 * (B % 4294967296) <= r) && q == 0) && p == 8) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && (r * -1 + 5) / -4294967296 < 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((((d * -1 / -2 <= r && cond == 1) && 1 <= cond) && 2 * (B % 4294967296) == d) && 1 <= B % 4294967296) && q == 0) && r == A % 4294967296) && (r * -1 + 5) / -4294967296 < 1) && p == 2) || ((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && 1 <= B % 4294967296) && 2 * (p / 2 * (B % 4294967296)) == d) && q == 0) && r == A % 4294967296) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && 1 <= B % 4294967296) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 <= cond) && 1 <= B % 4294967296) && 4 * (B % 4294967296) <= r) && q == 0) && p == 8) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && (r * -1 + 5) / -4294967296 < 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((((d * -1 / -2 <= r && cond == 1) && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1) && p == 2) || (((((((cond == 1 && B % 4294967296 <= 5) && 1 <= B % 4294967296) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && 4 * (B % 4294967296) <= r) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1) RESULT: Ultimate proved your program to be correct! [2021-10-13 00:51:02,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aaf6e4e-74a6-4df6-a44d-794e08d04c7a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...