./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.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_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/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_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/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_2ae2d4a8-82b8-46e1-8883-04db4d92b010/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 0f3c6dbfc61bcfa3bb6247579821c45f98d2bd1b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 00:14:47,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:14:47,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:14:47,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:14:47,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:14:47,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:14:47,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:14:47,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:14:47,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:14:47,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:14:47,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:14:47,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:14:47,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:14:47,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:14:47,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:14:47,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:14:47,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:14:47,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:14:47,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:14:47,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:14:47,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:14:47,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:14:47,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:14:47,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:14:47,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:14:47,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:14:47,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:14:47,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:14:47,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:14:47,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:14:47,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:14:47,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:14:47,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:14:47,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:14:47,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:14:47,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:14:47,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:14:47,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:14:47,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:14:47,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:14:47,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:14:47,286 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:14:47,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:14:47,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:14:47,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:14:47,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:14:47,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:14:47,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:14:47,348 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:14:47,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:14:47,348 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:14:47,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:14:47,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:14:47,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:14:47,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:14:47,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:14:47,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:14:47,352 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:14:47,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:14:47,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:14:47,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:14:47,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:14:47,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:14:47,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:14:47,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:14:47,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:14:47,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:14:47,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:14:47,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:14:47,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:14:47,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:14:47,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:14:47,357 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_2ae2d4a8-82b8-46e1-8883-04db4d92b010/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f3c6dbfc61bcfa3bb6247579821c45f98d2bd1b [2021-10-13 00:14:47,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:14:47,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:14:47,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:14:47,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:14:47,685 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:14:47,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c [2021-10-13 00:14:47,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/data/233a2fb3b/00ab70ecac704baeb326c0b52b479366/FLAG06f923fe6 [2021-10-13 00:14:48,317 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:14:48,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c [2021-10-13 00:14:48,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/data/233a2fb3b/00ab70ecac704baeb326c0b52b479366/FLAG06f923fe6 [2021-10-13 00:14:48,665 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/data/233a2fb3b/00ab70ecac704baeb326c0b52b479366 [2021-10-13 00:14:48,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:14:48,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:14:48,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:14:48,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:14:48,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:14:48,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:48,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779140f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48, skipping insertion in model container [2021-10-13 00:14:48,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:48,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:14:48,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:14:48,915 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_2ae2d4a8-82b8-46e1-8883-04db4d92b010/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c[576,589] [2021-10-13 00:14:48,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:14:48,953 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:14:48,968 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_2ae2d4a8-82b8-46e1-8883-04db4d92b010/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c[576,589] [2021-10-13 00:14:48,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:14:48,995 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:14:48,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48 WrapperNode [2021-10-13 00:14:48,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:14:48,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:14:48,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:14:48,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:14:49,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:49,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:49,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:14:49,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:14:49,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:14:49,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:14:49,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:49,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:49,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:49,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:49,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:49,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:49,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:49,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:14:49,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:14:49,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:14:49,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:14:49,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (1/1) ... [2021-10-13 00:14:49,131 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:14:49,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:49,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:49,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:14:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:14:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:14:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:14:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:14:49,527 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:14:49,528 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 00:14:49,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:14:49 BoogieIcfgContainer [2021-10-13 00:14:49,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:14:49,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:14:49,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:14:49,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:14:49,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:14:48" (1/3) ... [2021-10-13 00:14:49,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f8c82e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:14:49, skipping insertion in model container [2021-10-13 00:14:49,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:48" (2/3) ... [2021-10-13 00:14:49,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f8c82e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:14:49, skipping insertion in model container [2021-10-13 00:14:49,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:14:49" (3/3) ... [2021-10-13 00:14:49,540 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound50.c [2021-10-13 00:14:49,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:14:49,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 00:14:49,613 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:14:49,625 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 00:14:49,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 00:14:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 states have internal predecessors, (54), 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 00:14:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:14:49,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:49,679 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:49,680 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash 122367883, now seen corresponding path program 1 times [2021-10-13 00:14:49,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:49,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562028730] [2021-10-13 00:14:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:49,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:49,892 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 00:14:49,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:49,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562028730] [2021-10-13 00:14:49,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562028730] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:49,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:14:49,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:14:49,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091338557] [2021-10-13 00:14:49,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:14:49,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:14:49,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:14:49,927 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 00:14:49,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:49,955 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2021-10-13 00:14:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:14:49,957 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-13 00:14:49,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:49,967 INFO L225 Difference]: With dead ends: 79 [2021-10-13 00:14:49,967 INFO L226 Difference]: Without dead ends: 37 [2021-10-13 00:14:49,971 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 00:14:49,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-13 00:14:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-13 00:14:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-10-13 00:14:50,012 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2021-10-13 00:14:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:50,013 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-10-13 00:14:50,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 00:14:50,014 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-10-13 00:14:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:14:50,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:50,015 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:50,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:14:50,016 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 00:14:50,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:50,017 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-10-13 00:14:50,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:50,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638841681] [2021-10-13 00:14:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:50,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:50,067 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:50,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826053824] [2021-10-13 00:14:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:50,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:50,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:50,075 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:50,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:14:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:50,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:14:50,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:50,603 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 00:14:50,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:50,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638841681] [2021-10-13 00:14:50,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:50,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826053824] [2021-10-13 00:14:50,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826053824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:50,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:14:50,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:14:50,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732976578] [2021-10-13 00:14:50,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:14:50,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:50,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:14:50,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:50,613 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 00:14:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:50,840 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-13 00:14:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:14:50,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2021-10-13 00:14:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:50,847 INFO L225 Difference]: With dead ends: 51 [2021-10-13 00:14:50,847 INFO L226 Difference]: Without dead ends: 49 [2021-10-13 00:14:50,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:14:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-13 00:14:50,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-10-13 00:14:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 39 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 00:14:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-10-13 00:14:50,870 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2021-10-13 00:14:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:50,871 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-10-13 00:14:50,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 00:14:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-10-13 00:14:50,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:14:50,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:50,873 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:50,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:51,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:51,098 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:51,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:51,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1182906761, now seen corresponding path program 1 times [2021-10-13 00:14:51,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:51,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844443725] [2021-10-13 00:14:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:51,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:51,131 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:51,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938668480] [2021-10-13 00:14:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:51,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:51,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:51,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:51,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:14:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:51,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:14:51,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:51,280 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 00:14:51,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:51,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844443725] [2021-10-13 00:14:51,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:51,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938668480] [2021-10-13 00:14:51,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938668480] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:51,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:14:51,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:14:51,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144787059] [2021-10-13 00:14:51,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:14:51,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:14:51,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:14:51,285 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:51,316 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-10-13 00:14:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:14:51,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 00:14:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:51,318 INFO L225 Difference]: With dead ends: 44 [2021-10-13 00:14:51,319 INFO L226 Difference]: Without dead ends: 40 [2021-10-13 00:14:51,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:14:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-13 00:14:51,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-13 00:14:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.303030303030303) internal successors, (43), 39 states have internal predecessors, (43), 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 00:14:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-13 00:14:51,334 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2021-10-13 00:14:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:51,336 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-13 00:14:51,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-13 00:14:51,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:14:51,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:51,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:51,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:51,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:51,566 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:51,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-10-13 00:14:51,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:51,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991323209] [2021-10-13 00:14:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:51,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:51,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:51,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916387749] [2021-10-13 00:14:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:51,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:51,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:51,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:51,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:14:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:51,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:14:51,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:51,865 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 00:14:51,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:51,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991323209] [2021-10-13 00:14:51,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:51,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916387749] [2021-10-13 00:14:51,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916387749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:51,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:14:51,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:14:51,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373822241] [2021-10-13 00:14:51,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:14:51,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:51,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:14:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:51,871 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 00:14:52,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:52,086 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-10-13 00:14:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:14:52,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2021-10-13 00:14:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:52,088 INFO L225 Difference]: With dead ends: 74 [2021-10-13 00:14:52,088 INFO L226 Difference]: Without dead ends: 66 [2021-10-13 00:14:52,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:14:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-13 00:14:52,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2021-10-13 00:14:52,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.326086956521739) internal successors, (61), 52 states have internal predecessors, (61), 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 00:14:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-10-13 00:14:52,097 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2021-10-13 00:14:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:52,097 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-10-13 00:14:52,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 00:14:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-10-13 00:14:52,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:14:52,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:52,099 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:52,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-13 00:14:52,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:52,314 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:52,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:52,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1896102171, now seen corresponding path program 1 times [2021-10-13 00:14:52,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:52,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515324853] [2021-10-13 00:14:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:52,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:52,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:52,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442264625] [2021-10-13 00:14:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:52,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:52,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:52,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:52,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:14:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:52,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:14:52,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:52,521 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 00:14:52,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:52,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515324853] [2021-10-13 00:14:52,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:52,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442264625] [2021-10-13 00:14:52,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442264625] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:52,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:14:52,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:14:52,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922713442] [2021-10-13 00:14:52,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:14:52,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:52,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:14:52,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:14:52,526 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:52,629 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2021-10-13 00:14:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:14:52,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:14:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:52,634 INFO L225 Difference]: With dead ends: 104 [2021-10-13 00:14:52,634 INFO L226 Difference]: Without dead ends: 98 [2021-10-13 00:14:52,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:14:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-13 00:14:52,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2021-10-13 00:14:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.338235294117647) internal successors, (91), 74 states have internal predecessors, (91), 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 00:14:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-10-13 00:14:52,654 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 14 [2021-10-13 00:14:52,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:52,654 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-10-13 00:14:52,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-10-13 00:14:52,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:14:52,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:52,656 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:52,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-13 00:14:52,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:52,866 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:52,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1527669658, now seen corresponding path program 1 times [2021-10-13 00:14:52,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:52,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920015101] [2021-10-13 00:14:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:52,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:52,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:52,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389486691] [2021-10-13 00:14:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:52,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:52,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:52,883 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:52,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:14:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:52,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:14:52,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:53,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:53,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920015101] [2021-10-13 00:14:53,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:53,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389486691] [2021-10-13 00:14:53,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389486691] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:53,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:14:53,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:14:53,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082494603] [2021-10-13 00:14:53,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:14:53,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:53,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:14:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:14:53,029 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 00:14:53,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:53,052 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2021-10-13 00:14:53,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:14:53,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 00:14:53,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:53,054 INFO L225 Difference]: With dead ends: 121 [2021-10-13 00:14:53,054 INFO L226 Difference]: Without dead ends: 75 [2021-10-13 00:14:53,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:14:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-13 00:14:53,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-13 00:14:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.3235294117647058) internal successors, (90), 74 states have internal predecessors, (90), 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 00:14:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2021-10-13 00:14:53,066 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 18 [2021-10-13 00:14:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:53,067 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2021-10-13 00:14:53,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 00:14:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2021-10-13 00:14:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:14:53,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:53,068 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 00:14:53,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:53,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 00:14:53,286 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:53,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:53,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2092681793, now seen corresponding path program 1 times [2021-10-13 00:14:53,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:53,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347727242] [2021-10-13 00:14:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:53,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:53,300 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:53,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644335521] [2021-10-13 00:14:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:53,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:53,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:53,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:53,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:14:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:53,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:14:53,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:53,492 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 00:14:53,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:53,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347727242] [2021-10-13 00:14:53,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:53,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644335521] [2021-10-13 00:14:53,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644335521] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:53,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:14:53,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:14:53,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93391187] [2021-10-13 00:14:53,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:14:53,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:53,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:14:53,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:53,495 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 00:14:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:53,629 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2021-10-13 00:14:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:14:53,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 00:14:53,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:53,631 INFO L225 Difference]: With dead ends: 82 [2021-10-13 00:14:53,631 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 00:14:53,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:14:53,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 00:14:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2021-10-13 00:14:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 72 states have internal predecessors, (85), 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 00:14:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2021-10-13 00:14:53,643 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 18 [2021-10-13 00:14:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:53,643 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2021-10-13 00:14:53,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 00:14:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2021-10-13 00:14:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:14:53,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:53,645 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:53,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:53,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 00:14:53,870 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1135496359, now seen corresponding path program 1 times [2021-10-13 00:14:53,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:53,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127966631] [2021-10-13 00:14:53,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:53,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:53,885 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:53,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238845506] [2021-10-13 00:14:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:53,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:53,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:53,887 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:53,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:14:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:53,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:14:53,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:54,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:54,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127966631] [2021-10-13 00:14:54,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:54,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238845506] [2021-10-13 00:14:54,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238845506] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:54,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:54,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:14:54,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625882729] [2021-10-13 00:14:54,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:14:54,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:14:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:54,082 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 00:14:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:54,109 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2021-10-13 00:14:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:14:54,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2021-10-13 00:14:54,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:54,110 INFO L225 Difference]: With dead ends: 82 [2021-10-13 00:14:54,111 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 00:14:54,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:14:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 00:14:54,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-13 00:14:54,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 75 states have internal predecessors, (88), 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 00:14:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2021-10-13 00:14:54,120 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 24 [2021-10-13 00:14:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:54,120 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2021-10-13 00:14:54,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 00:14:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2021-10-13 00:14:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:14:54,122 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:54,122 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:54,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:54,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:54,340 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:54,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1501746768, now seen corresponding path program 1 times [2021-10-13 00:14:54,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:54,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788036964] [2021-10-13 00:14:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:54,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:54,355 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:54,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475920140] [2021-10-13 00:14:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:54,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:54,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:54,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:54,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:14:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:54,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:14:54,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:54,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:54,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788036964] [2021-10-13 00:14:54,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:54,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475920140] [2021-10-13 00:14:54,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475920140] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:54,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:54,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:14:54,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854294169] [2021-10-13 00:14:54,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:14:54,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:54,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:14:54,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:14:54,753 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 00:14:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:55,043 INFO L93 Difference]: Finished difference Result 142 states and 164 transitions. [2021-10-13 00:14:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:14:55,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 24 [2021-10-13 00:14:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:55,046 INFO L225 Difference]: With dead ends: 142 [2021-10-13 00:14:55,046 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 00:14:55,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 158.1ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:14:55,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 00:14:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2021-10-13 00:14:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 95 states have internal predecessors, (113), 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 00:14:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2021-10-13 00:14:55,061 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 24 [2021-10-13 00:14:55,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:55,061 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2021-10-13 00:14:55,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 00:14:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2021-10-13 00:14:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 00:14:55,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:55,063 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:55,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:55,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:55,278 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash 839910097, now seen corresponding path program 1 times [2021-10-13 00:14:55,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:55,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145344496] [2021-10-13 00:14:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:55,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:55,293 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:55,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630849327] [2021-10-13 00:14:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:55,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:55,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:55,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:55,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:14:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:55,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:14:55,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:55,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:55,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145344496] [2021-10-13 00:14:55,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:55,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630849327] [2021-10-13 00:14:55,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630849327] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:55,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:55,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:14:55,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451915863] [2021-10-13 00:14:55,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:14:55,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:14:55,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:55,707 INFO L87 Difference]: Start difference. First operand 96 states and 113 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 00:14:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:55,859 INFO L93 Difference]: Finished difference Result 154 states and 178 transitions. [2021-10-13 00:14:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:14:55,860 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 25 [2021-10-13 00:14:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:55,862 INFO L225 Difference]: With dead ends: 154 [2021-10-13 00:14:55,862 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 00:14:55,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:14:55,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 00:14:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 108. [2021-10-13 00:14:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 102 states have (on average 1.2450980392156863) internal successors, (127), 107 states have internal predecessors, (127), 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 00:14:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2021-10-13 00:14:55,885 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 25 [2021-10-13 00:14:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:55,885 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2021-10-13 00:14:55,886 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 00:14:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2021-10-13 00:14:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 00:14:55,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:55,887 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:55,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:56,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:56,106 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1388511663, now seen corresponding path program 1 times [2021-10-13 00:14:56,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:56,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915699761] [2021-10-13 00:14:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:56,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:56,128 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:56,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068904261] [2021-10-13 00:14:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:56,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:56,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:56,130 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:56,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:14:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:56,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:14:56,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:56,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:56,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915699761] [2021-10-13 00:14:56,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:56,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068904261] [2021-10-13 00:14:56,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068904261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:56,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:56,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:14:56,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735679347] [2021-10-13 00:14:56,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:14:56,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:56,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:14:56,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:56,365 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 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 00:14:56,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:56,398 INFO L93 Difference]: Finished difference Result 166 states and 196 transitions. [2021-10-13 00:14:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:14:56,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2021-10-13 00:14:56,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:56,400 INFO L225 Difference]: With dead ends: 166 [2021-10-13 00:14:56,400 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 00:14:56,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:14:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 00:14:56,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-13 00:14:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 111 states have internal predecessors, (131), 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 00:14:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2021-10-13 00:14:56,414 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 28 [2021-10-13 00:14:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:56,414 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2021-10-13 00:14:56,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 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 00:14:56,415 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2021-10-13 00:14:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 00:14:56,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:56,419 INFO L512 BasicCegarLoop]: trace histogram [3, 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 00:14:56,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:56,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:56,634 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:56,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1005744700, now seen corresponding path program 1 times [2021-10-13 00:14:56,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:56,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291844539] [2021-10-13 00:14:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:56,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:56,654 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:56,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318139488] [2021-10-13 00:14:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:56,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:56,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:56,667 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:56,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:14:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:56,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:14:56,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:56,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:56,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291844539] [2021-10-13 00:14:56,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:56,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318139488] [2021-10-13 00:14:56,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318139488] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:56,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:14:56,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:14:56,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96008326] [2021-10-13 00:14:56,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:14:56,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:56,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:14:56,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:14:56,961 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 00:14:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:57,047 INFO L93 Difference]: Finished difference Result 215 states and 249 transitions. [2021-10-13 00:14:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:14:57,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2021-10-13 00:14:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:57,050 INFO L225 Difference]: With dead ends: 215 [2021-10-13 00:14:57,051 INFO L226 Difference]: Without dead ends: 125 [2021-10-13 00:14:57,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:57,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-13 00:14:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 100. [2021-10-13 00:14:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 99 states have internal predecessors, (117), 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 00:14:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2021-10-13 00:14:57,069 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 33 [2021-10-13 00:14:57,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:57,069 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2021-10-13 00:14:57,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 00:14:57,070 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2021-10-13 00:14:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:14:57,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:57,074 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:57,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:57,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 00:14:57,294 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:57,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:57,295 INFO L82 PathProgramCache]: Analyzing trace with hash 332875516, now seen corresponding path program 1 times [2021-10-13 00:14:57,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:57,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729318852] [2021-10-13 00:14:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:57,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:57,308 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:57,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7155621] [2021-10-13 00:14:57,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:57,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:57,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:57,310 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:57,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:14:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:57,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:14:57,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:57,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:57,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729318852] [2021-10-13 00:14:57,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:57,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7155621] [2021-10-13 00:14:57,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7155621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:57,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:57,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:14:57,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595072561] [2021-10-13 00:14:57,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:14:57,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:57,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:14:57,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:14:57,604 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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 00:14:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:57,639 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2021-10-13 00:14:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:14:57,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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 34 [2021-10-13 00:14:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:57,641 INFO L225 Difference]: With dead ends: 109 [2021-10-13 00:14:57,641 INFO L226 Difference]: Without dead ends: 105 [2021-10-13 00:14:57,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:14:57,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-13 00:14:57,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2021-10-13 00:14:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.2371134020618557) internal successors, (120), 102 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 00:14:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2021-10-13 00:14:57,653 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 34 [2021-10-13 00:14:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:57,654 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2021-10-13 00:14:57,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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 00:14:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2021-10-13 00:14:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:14:57,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:57,655 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:57,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:57,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 00:14:57,874 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:57,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1990599685, now seen corresponding path program 2 times [2021-10-13 00:14:57,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:57,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695821333] [2021-10-13 00:14:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:57,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:57,887 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:57,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669396863] [2021-10-13 00:14:57,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:14:57,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:57,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:57,889 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:57,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 00:14:58,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:14:58,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:58,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:14:58,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:58,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:58,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695821333] [2021-10-13 00:14:58,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:58,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669396863] [2021-10-13 00:14:58,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669396863] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:58,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:58,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:14:58,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226248588] [2021-10-13 00:14:58,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:14:58,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:58,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:14:58,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:14:58,412 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 00:14:58,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:58,818 INFO L93 Difference]: Finished difference Result 188 states and 216 transitions. [2021-10-13 00:14:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:14:58,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 34 [2021-10-13 00:14:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:58,821 INFO L225 Difference]: With dead ends: 188 [2021-10-13 00:14:58,822 INFO L226 Difference]: Without dead ends: 182 [2021-10-13 00:14:58,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 211.0ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:14:58,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-13 00:14:58,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 123. [2021-10-13 00:14:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 117 states have (on average 1.2393162393162394) internal successors, (145), 122 states have internal predecessors, (145), 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 00:14:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2021-10-13 00:14:58,837 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 34 [2021-10-13 00:14:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:58,838 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2021-10-13 00:14:58,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 00:14:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2021-10-13 00:14:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 00:14:58,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:58,842 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:58,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:59,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 00:14:59,058 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:14:59,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:59,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1728467740, now seen corresponding path program 1 times [2021-10-13 00:14:59,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:59,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362440467] [2021-10-13 00:14:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:59,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:59,081 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:59,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677243067] [2021-10-13 00:14:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:59,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:59,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:59,084 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:59,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 00:14:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:59,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:14:59,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:59,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:59,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362440467] [2021-10-13 00:14:59,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:59,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677243067] [2021-10-13 00:14:59,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677243067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:59,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:59,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:14:59,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3957292] [2021-10-13 00:14:59,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:14:59,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:59,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:14:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:14:59,912 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:00,180 INFO L93 Difference]: Finished difference Result 197 states and 231 transitions. [2021-10-13 00:15:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:15:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 00:15:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:00,183 INFO L225 Difference]: With dead ends: 197 [2021-10-13 00:15:00,183 INFO L226 Difference]: Without dead ends: 189 [2021-10-13 00:15:00,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 138.7ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:15:00,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-10-13 00:15:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 145. [2021-10-13 00:15:00,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 139 states have (on average 1.2302158273381294) internal successors, (171), 144 states have internal predecessors, (171), 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 00:15:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2021-10-13 00:15:00,209 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 35 [2021-10-13 00:15:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:00,210 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2021-10-13 00:15:00,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2021-10-13 00:15:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:15:00,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:00,213 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-10-13 00:15:00,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:00,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:00,430 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:00,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1769158268, now seen corresponding path program 2 times [2021-10-13 00:15:00,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:00,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768952946] [2021-10-13 00:15:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:00,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:00,447 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:00,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966011084] [2021-10-13 00:15:00,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:15:00,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:00,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:00,459 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:00,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 00:15:00,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:15:00,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:00,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:15:00,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:00,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:00,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768952946] [2021-10-13 00:15:00,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:00,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966011084] [2021-10-13 00:15:00,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966011084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:00,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:00,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:15:00,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024031077] [2021-10-13 00:15:00,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:15:00,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:00,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:15:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:15:00,895 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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 00:15:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:00,941 INFO L93 Difference]: Finished difference Result 220 states and 262 transitions. [2021-10-13 00:15:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:15:00,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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 00:15:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:00,943 INFO L225 Difference]: With dead ends: 220 [2021-10-13 00:15:00,943 INFO L226 Difference]: Without dead ends: 149 [2021-10-13 00:15:00,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:15:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-13 00:15:00,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-10-13 00:15:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 143 states have (on average 1.2237762237762237) internal successors, (175), 148 states have internal predecessors, (175), 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 00:15:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 175 transitions. [2021-10-13 00:15:00,959 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 175 transitions. Word has length 38 [2021-10-13 00:15:00,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:00,959 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 175 transitions. [2021-10-13 00:15:00,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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 00:15:00,960 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 175 transitions. [2021-10-13 00:15:00,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 00:15:00,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:00,961 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:01,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:01,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:01,174 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:01,175 INFO L82 PathProgramCache]: Analyzing trace with hash -307935353, now seen corresponding path program 1 times [2021-10-13 00:15:01,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:01,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671287752] [2021-10-13 00:15:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:01,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:01,210 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:01,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333142590] [2021-10-13 00:15:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:01,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:01,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:01,212 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:01,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 00:15:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:01,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:15:01,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:01,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:01,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671287752] [2021-10-13 00:15:01,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:01,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333142590] [2021-10-13 00:15:01,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333142590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:01,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:01,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:15:01,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582541644] [2021-10-13 00:15:01,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:15:01,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:01,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:15:01,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:15:01,700 INFO L87 Difference]: Start difference. First operand 149 states and 175 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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 00:15:01,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:01,762 INFO L93 Difference]: Finished difference Result 232 states and 275 transitions. [2021-10-13 00:15:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:15:01,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2021-10-13 00:15:01,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:01,764 INFO L225 Difference]: With dead ends: 232 [2021-10-13 00:15:01,764 INFO L226 Difference]: Without dead ends: 161 [2021-10-13 00:15:01,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:15:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-13 00:15:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2021-10-13 00:15:01,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 153 states have (on average 1.2091503267973855) internal successors, (185), 158 states have internal predecessors, (185), 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 00:15:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 185 transitions. [2021-10-13 00:15:01,782 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 185 transitions. Word has length 43 [2021-10-13 00:15:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:01,782 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 185 transitions. [2021-10-13 00:15:01,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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 00:15:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 185 transitions. [2021-10-13 00:15:01,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 00:15:01,783 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:01,784 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:01,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:02,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 00:15:02,003 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:02,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:02,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1736500463, now seen corresponding path program 2 times [2021-10-13 00:15:02,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:02,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472668920] [2021-10-13 00:15:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:02,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:02,015 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:02,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848365533] [2021-10-13 00:15:02,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:15:02,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:02,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:02,017 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:02,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 00:15:02,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:15:02,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:02,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:15:02,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:02,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:02,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472668920] [2021-10-13 00:15:02,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:02,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848365533] [2021-10-13 00:15:02,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848365533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:02,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:02,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:15:02,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935807672] [2021-10-13 00:15:02,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:15:02,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:02,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:15:02,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:15:02,530 INFO L87 Difference]: Start difference. First operand 159 states and 185 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 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 00:15:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:02,581 INFO L93 Difference]: Finished difference Result 166 states and 192 transitions. [2021-10-13 00:15:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:15:02,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 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 00:15:02,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:02,583 INFO L225 Difference]: With dead ends: 166 [2021-10-13 00:15:02,584 INFO L226 Difference]: Without dead ends: 162 [2021-10-13 00:15:02,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:15:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-13 00:15:02,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-10-13 00:15:02,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 156 states have (on average 1.205128205128205) internal successors, (188), 161 states have internal predecessors, (188), 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 00:15:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 188 transitions. [2021-10-13 00:15:02,600 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 188 transitions. Word has length 44 [2021-10-13 00:15:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:02,601 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 188 transitions. [2021-10-13 00:15:02,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 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 00:15:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 188 transitions. [2021-10-13 00:15:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 00:15:02,602 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:02,602 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:02,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:02,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 00:15:02,818 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:02,819 INFO L82 PathProgramCache]: Analyzing trace with hash -78776294, now seen corresponding path program 3 times [2021-10-13 00:15:02,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:02,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191133604] [2021-10-13 00:15:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:02,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:02,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:02,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731409722] [2021-10-13 00:15:02,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:15:02,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:02,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:02,845 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:02,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 00:15:03,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:15:03,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:03,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:15:03,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 00:15:03,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:03,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191133604] [2021-10-13 00:15:03,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:03,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731409722] [2021-10-13 00:15:03,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731409722] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:03,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:03,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:15:03,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928382300] [2021-10-13 00:15:03,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:15:03,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:15:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:15:03,540 INFO L87 Difference]: Start difference. First operand 162 states and 188 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 00:15:11,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:11,221 INFO L93 Difference]: Finished difference Result 184 states and 210 transitions. [2021-10-13 00:15:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:15:11,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 00:15:11,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:11,223 INFO L225 Difference]: With dead ends: 184 [2021-10-13 00:15:11,223 INFO L226 Difference]: Without dead ends: 178 [2021-10-13 00:15:11,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2900.8ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:15:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-13 00:15:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 110. [2021-10-13 00:15:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.1495327102803738) internal successors, (123), 109 states have internal predecessors, (123), 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 00:15:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2021-10-13 00:15:11,238 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 44 [2021-10-13 00:15:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:11,239 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2021-10-13 00:15:11,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 00:15:11,239 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2021-10-13 00:15:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 00:15:11,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:11,240 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:11,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:11,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:11,441 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:11,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2002321831, now seen corresponding path program 2 times [2021-10-13 00:15:11,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:11,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309788523] [2021-10-13 00:15:11,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:11,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:11,455 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:11,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087326404] [2021-10-13 00:15:11,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:15:11,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:11,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:11,456 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:11,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 00:15:11,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:15:11,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:11,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 00:15:11,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:12,395 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 00:15:12,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:12,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309788523] [2021-10-13 00:15:12,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:12,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087326404] [2021-10-13 00:15:12,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087326404] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:12,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:12,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:15:12,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639628866] [2021-10-13 00:15:12,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:15:12,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:12,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:15:12,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:15:12,399 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 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 00:15:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:12,692 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2021-10-13 00:15:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:15:12,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 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 00:15:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:12,693 INFO L225 Difference]: With dead ends: 157 [2021-10-13 00:15:12,694 INFO L226 Difference]: Without dead ends: 149 [2021-10-13 00:15:12,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:15:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-13 00:15:12,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 116. [2021-10-13 00:15:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 1.1504424778761062) internal successors, (130), 115 states have internal predecessors, (130), 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 00:15:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2021-10-13 00:15:12,710 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 45 [2021-10-13 00:15:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:12,710 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2021-10-13 00:15:12,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 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 00:15:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2021-10-13 00:15:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 00:15:12,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:12,711 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:12,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:12,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:12,926 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:12,926 INFO L82 PathProgramCache]: Analyzing trace with hash 762563284, now seen corresponding path program 3 times [2021-10-13 00:15:12,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:12,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190577660] [2021-10-13 00:15:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:12,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:12,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:12,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354874545] [2021-10-13 00:15:12,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:15:12,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:12,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:12,942 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:12,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 00:15:13,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:15:13,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:13,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:15:13,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 00:15:13,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:13,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190577660] [2021-10-13 00:15:13,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:13,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354874545] [2021-10-13 00:15:13,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354874545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:15:13,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:15:13,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:15:13,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767128672] [2021-10-13 00:15:13,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:15:13,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:13,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:15:13,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:15:13,503 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 00:15:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:13,693 INFO L93 Difference]: Finished difference Result 161 states and 180 transitions. [2021-10-13 00:15:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:15:13,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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) Word has length 49 [2021-10-13 00:15:13,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:13,694 INFO L225 Difference]: With dead ends: 161 [2021-10-13 00:15:13,695 INFO L226 Difference]: Without dead ends: 145 [2021-10-13 00:15:13,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 70.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:15:13,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-13 00:15:13,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 111. [2021-10-13 00:15:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 108 states have (on average 1.1203703703703705) internal successors, (121), 110 states have internal predecessors, (121), 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 00:15:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-10-13 00:15:13,712 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 49 [2021-10-13 00:15:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:13,712 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-10-13 00:15:13,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 00:15:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-10-13 00:15:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:15:13,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:13,714 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:13,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:13,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:13,934 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:13,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:13,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1005346468, now seen corresponding path program 2 times [2021-10-13 00:15:13,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:13,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844232895] [2021-10-13 00:15:13,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:13,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:13,944 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:13,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572714284] [2021-10-13 00:15:13,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:15:13,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:13,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:13,947 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:13,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 00:15:14,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:15:14,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:14,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:15:14,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:14,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:14,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844232895] [2021-10-13 00:15:14,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:14,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572714284] [2021-10-13 00:15:14,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572714284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:14,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:14,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:15:14,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873630191] [2021-10-13 00:15:14,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:15:14,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:14,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:15:14,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:15:14,530 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:15:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:14,720 INFO L93 Difference]: Finished difference Result 241 states and 262 transitions. [2021-10-13 00:15:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:15:14,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:15:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:14,723 INFO L225 Difference]: With dead ends: 241 [2021-10-13 00:15:14,723 INFO L226 Difference]: Without dead ends: 166 [2021-10-13 00:15:14,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 65.9ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:15:14,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-13 00:15:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2021-10-13 00:15:14,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 127 states have (on average 1.1496062992125984) internal successors, (146), 129 states have internal predecessors, (146), 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 00:15:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 146 transitions. [2021-10-13 00:15:14,745 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 146 transitions. Word has length 53 [2021-10-13 00:15:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:14,745 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 146 transitions. [2021-10-13 00:15:14,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:15:14,746 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 146 transitions. [2021-10-13 00:15:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:15:14,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:14,746 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:14,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:14,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-13 00:15:14,974 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:14,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:14,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1869464814, now seen corresponding path program 3 times [2021-10-13 00:15:14,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:14,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557040854] [2021-10-13 00:15:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:14,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:14,984 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:14,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35924182] [2021-10-13 00:15:14,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:15:14,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:14,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:14,986 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:15,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 00:15:15,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:15:15,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:15,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:15:15,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 00:15:15,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:15,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557040854] [2021-10-13 00:15:15,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:15,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35924182] [2021-10-13 00:15:15,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35924182] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:15:15,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:15:15,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:15:15,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616670316] [2021-10-13 00:15:15,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:15:15,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:15:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:15:15,564 INFO L87 Difference]: Start difference. First operand 130 states and 146 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 00:15:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:15,709 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2021-10-13 00:15:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:15:15,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 00:15:15,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:15,711 INFO L225 Difference]: With dead ends: 142 [2021-10-13 00:15:15,711 INFO L226 Difference]: Without dead ends: 120 [2021-10-13 00:15:15,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:15:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-13 00:15:15,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2021-10-13 00:15:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.096774193548387) internal successors, (102), 94 states have internal predecessors, (102), 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 00:15:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-10-13 00:15:15,728 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 53 [2021-10-13 00:15:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:15,728 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-10-13 00:15:15,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 00:15:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-10-13 00:15:15,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 00:15:15,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:15,729 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:15,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:15,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:15,942 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:15,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1395693798, now seen corresponding path program 4 times [2021-10-13 00:15:15,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:15,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656071409] [2021-10-13 00:15:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:15,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:15,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:15,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320004552] [2021-10-13 00:15:15,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:15:15,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:15,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:15,977 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:15,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 00:15:16,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:15:16,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:16,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 00:15:16,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:17,150 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 00:15:17,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:17,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656071409] [2021-10-13 00:15:17,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:17,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320004552] [2021-10-13 00:15:17,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320004552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:17,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:17,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:15:17,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981326535] [2021-10-13 00:15:17,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:15:17,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:17,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:15:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:15:17,155 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 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 00:15:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:17,601 INFO L93 Difference]: Finished difference Result 170 states and 188 transitions. [2021-10-13 00:15:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:15:17,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 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 54 [2021-10-13 00:15:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:17,603 INFO L225 Difference]: With dead ends: 170 [2021-10-13 00:15:17,603 INFO L226 Difference]: Without dead ends: 164 [2021-10-13 00:15:17,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 169.4ms TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:15:17,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-13 00:15:17,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 101. [2021-10-13 00:15:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 99 states have (on average 1.101010101010101) internal successors, (109), 100 states have internal predecessors, (109), 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 00:15:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2021-10-13 00:15:17,621 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 54 [2021-10-13 00:15:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:17,621 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2021-10-13 00:15:17,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 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 00:15:17,621 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2021-10-13 00:15:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 00:15:17,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:17,622 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:17,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:17,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:17,838 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:17,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:17,838 INFO L82 PathProgramCache]: Analyzing trace with hash 62330478, now seen corresponding path program 3 times [2021-10-13 00:15:17,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:17,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388739994] [2021-10-13 00:15:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:17,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:17,850 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:17,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054777752] [2021-10-13 00:15:17,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:15:17,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:17,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:17,852 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:17,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 00:15:18,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:15:18,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:18,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:15:18,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-13 00:15:19,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:19,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388739994] [2021-10-13 00:15:19,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:19,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054777752] [2021-10-13 00:15:19,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054777752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:19,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:19,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:15:19,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231620014] [2021-10-13 00:15:19,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:15:19,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:15:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:15:19,401 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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 00:15:28,058 WARN L207 SmtUtils]: Spent 8.04 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-10-13 00:15:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:39,580 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2021-10-13 00:15:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:15:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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) Word has length 58 [2021-10-13 00:15:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:39,582 INFO L225 Difference]: With dead ends: 165 [2021-10-13 00:15:39,582 INFO L226 Difference]: Without dead ends: 160 [2021-10-13 00:15:39,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 11536.5ms TimeCoverageRelationStatistics Valid=42, Invalid=67, Unknown=1, NotChecked=0, Total=110 [2021-10-13 00:15:39,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-13 00:15:39,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 114. [2021-10-13 00:15:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1071428571428572) internal successors, (124), 113 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 00:15:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2021-10-13 00:15:39,605 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 58 [2021-10-13 00:15:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:39,605 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2021-10-13 00:15:39,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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 00:15:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2021-10-13 00:15:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-13 00:15:39,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:39,606 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:39,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:39,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-13 00:15:39,834 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:39,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1931506154, now seen corresponding path program 1 times [2021-10-13 00:15:39,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:39,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380566971] [2021-10-13 00:15:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:39,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:39,842 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:39,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68019625] [2021-10-13 00:15:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:39,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:39,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:39,844 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:39,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 00:15:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:40,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:15:40,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 5 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:40,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:40,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380566971] [2021-10-13 00:15:40,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:40,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68019625] [2021-10-13 00:15:40,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68019625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:40,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:40,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:15:40,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841602978] [2021-10-13 00:15:40,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:15:40,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:15:40,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:15:40,523 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 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 00:15:40,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:40,611 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2021-10-13 00:15:40,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:15:40,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 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) Word has length 59 [2021-10-13 00:15:40,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:40,613 INFO L225 Difference]: With dead ends: 185 [2021-10-13 00:15:40,614 INFO L226 Difference]: Without dead ends: 129 [2021-10-13 00:15:40,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:15:40,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-13 00:15:40,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2021-10-13 00:15:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 125 states have (on average 1.096) internal successors, (137), 126 states have internal predecessors, (137), 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 00:15:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-10-13 00:15:40,641 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 59 [2021-10-13 00:15:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:40,642 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-10-13 00:15:40,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 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 00:15:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-10-13 00:15:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:15:40,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:40,643 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:40,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:40,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 00:15:40,862 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:40,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1646664921, now seen corresponding path program 4 times [2021-10-13 00:15:40,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:40,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826113400] [2021-10-13 00:15:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:40,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:40,876 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:40,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096797485] [2021-10-13 00:15:40,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:15:40,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:40,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:40,881 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:40,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 00:15:41,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:15:41,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:41,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 00:15:41,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:42,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:42,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826113400] [2021-10-13 00:15:42,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:42,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096797485] [2021-10-13 00:15:42,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096797485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:42,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:42,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 00:15:42,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258175166] [2021-10-13 00:15:42,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:15:42,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:15:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:15:42,314 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 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 00:15:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:42,803 INFO L93 Difference]: Finished difference Result 251 states and 279 transitions. [2021-10-13 00:15:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 00:15:42,804 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 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 63 [2021-10-13 00:15:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:42,806 INFO L225 Difference]: With dead ends: 251 [2021-10-13 00:15:42,806 INFO L226 Difference]: Without dead ends: 184 [2021-10-13 00:15:42,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 236.3ms TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:15:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-13 00:15:42,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 137. [2021-10-13 00:15:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 135 states have (on average 1.0888888888888888) internal successors, (147), 136 states have internal predecessors, (147), 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 00:15:42,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2021-10-13 00:15:42,836 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 63 [2021-10-13 00:15:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:42,836 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2021-10-13 00:15:42,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 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 00:15:42,836 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2021-10-13 00:15:42,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 00:15:42,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:42,837 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:42,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:43,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 00:15:43,054 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:43,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:43,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1810613891, now seen corresponding path program 3 times [2021-10-13 00:15:43,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:43,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398343084] [2021-10-13 00:15:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:43,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:43,078 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:43,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457916244] [2021-10-13 00:15:43,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:15:43,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:43,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:43,080 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:43,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 00:15:43,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:15:43,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:43,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:15:43,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-13 00:15:44,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:44,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398343084] [2021-10-13 00:15:44,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:44,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457916244] [2021-10-13 00:15:44,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457916244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:44,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:44,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:15:44,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744746787] [2021-10-13 00:15:44,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:15:44,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:15:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:15:44,258 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 00:15:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:44,494 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2021-10-13 00:15:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:15:44,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 65 [2021-10-13 00:15:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:44,496 INFO L225 Difference]: With dead ends: 152 [2021-10-13 00:15:44,496 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 00:15:44,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 147.2ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:15:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 00:15:44,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 134. [2021-10-13 00:15:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.0909090909090908) internal successors, (144), 133 states have internal predecessors, (144), 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 00:15:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2021-10-13 00:15:44,525 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 65 [2021-10-13 00:15:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:44,525 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2021-10-13 00:15:44,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 00:15:44,526 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2021-10-13 00:15:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 00:15:44,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:44,526 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:44,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:44,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 00:15:44,754 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:44,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:44,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1696816334, now seen corresponding path program 5 times [2021-10-13 00:15:44,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:44,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767385869] [2021-10-13 00:15:44,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:44,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:44,775 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:44,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75082915] [2021-10-13 00:15:44,776 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:15:44,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:44,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:44,783 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:44,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 00:15:45,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 00:15:45,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:45,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:15:45,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 5 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:45,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:45,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767385869] [2021-10-13 00:15:45,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:45,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75082915] [2021-10-13 00:15:45,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75082915] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:45,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:45,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-13 00:15:45,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669627493] [2021-10-13 00:15:45,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:15:45,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:15:45,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:15:45,656 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 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 00:15:45,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:45,764 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2021-10-13 00:15:45,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:15:45,764 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 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 73 [2021-10-13 00:15:45,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:45,766 INFO L225 Difference]: With dead ends: 237 [2021-10-13 00:15:45,766 INFO L226 Difference]: Without dead ends: 165 [2021-10-13 00:15:45,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:15:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-13 00:15:45,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2021-10-13 00:15:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 161 states have (on average 1.0807453416149069) internal successors, (174), 162 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 174 transitions. [2021-10-13 00:15:45,801 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 174 transitions. Word has length 73 [2021-10-13 00:15:45,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:45,801 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 174 transitions. [2021-10-13 00:15:45,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 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 00:15:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 174 transitions. [2021-10-13 00:15:45,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 00:15:45,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:45,803 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:45,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:46,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 00:15:46,018 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:46,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:46,018 INFO L82 PathProgramCache]: Analyzing trace with hash 38042175, now seen corresponding path program 5 times [2021-10-13 00:15:46,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:46,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458609614] [2021-10-13 00:15:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:46,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:46,033 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:46,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455249509] [2021-10-13 00:15:46,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:15:46,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:46,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:46,035 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:46,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 00:15:46,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 00:15:46,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:46,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 00:15:46,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:47,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:47,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458609614] [2021-10-13 00:15:47,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:47,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455249509] [2021-10-13 00:15:47,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455249509] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:47,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:47,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:15:47,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563108208] [2021-10-13 00:15:47,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:15:47,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:47,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:15:47,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:15:47,016 INFO L87 Difference]: Start difference. First operand 163 states and 174 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 states have internal predecessors, (79), 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 00:15:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:47,106 INFO L93 Difference]: Finished difference Result 208 states and 221 transitions. [2021-10-13 00:15:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:15:47,107 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 states have internal predecessors, (79), 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 79 [2021-10-13 00:15:47,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:47,108 INFO L225 Difference]: With dead ends: 208 [2021-10-13 00:15:47,108 INFO L226 Difference]: Without dead ends: 204 [2021-10-13 00:15:47,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 65.0ms TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:15:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-13 00:15:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 172. [2021-10-13 00:15:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 170 states have (on average 1.0823529411764705) internal successors, (184), 171 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2021-10-13 00:15:47,146 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 79 [2021-10-13 00:15:47,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:47,147 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2021-10-13 00:15:47,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 states have internal predecessors, (79), 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 00:15:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2021-10-13 00:15:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 00:15:47,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:47,148 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:47,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:47,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:47,370 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:47,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:47,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1178568761, now seen corresponding path program 4 times [2021-10-13 00:15:47,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:47,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660737643] [2021-10-13 00:15:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:47,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:47,388 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:47,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979044569] [2021-10-13 00:15:47,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:15:47,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:47,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:47,394 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:47,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 00:15:47,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:15:47,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:48,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 00:15:48,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:48,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:48,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660737643] [2021-10-13 00:15:48,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:48,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979044569] [2021-10-13 00:15:48,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979044569] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:48,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:48,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-13 00:15:48,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014196421] [2021-10-13 00:15:48,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:15:48,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:48,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:15:48,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:15:48,996 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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 00:15:49,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:49,411 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2021-10-13 00:15:49,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 00:15:49,412 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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 80 [2021-10-13 00:15:49,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:49,413 INFO L225 Difference]: With dead ends: 197 [2021-10-13 00:15:49,413 INFO L226 Difference]: Without dead ends: 189 [2021-10-13 00:15:49,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 185.7ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:15:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-10-13 00:15:49,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2021-10-13 00:15:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 167 states have (on average 1.0778443113772456) internal successors, (180), 168 states have internal predecessors, (180), 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 00:15:49,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 180 transitions. [2021-10-13 00:15:49,464 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 180 transitions. Word has length 80 [2021-10-13 00:15:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:49,464 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 180 transitions. [2021-10-13 00:15:49,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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 00:15:49,465 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 180 transitions. [2021-10-13 00:15:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-13 00:15:49,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:49,469 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:49,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:49,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-13 00:15:49,684 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:15:49,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:49,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1490592583, now seen corresponding path program 6 times [2021-10-13 00:15:49,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:49,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878968320] [2021-10-13 00:15:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:49,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:49,710 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:49,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884333172] [2021-10-13 00:15:49,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:15:49,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:49,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:49,712 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:49,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 00:15:50,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 00:15:50,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:50,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 00:15:50,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 12 proven. 95 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-13 00:15:52,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:52,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878968320] [2021-10-13 00:15:52,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:52,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884333172] [2021-10-13 00:15:52,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884333172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:52,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:52,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:15:52,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164346555] [2021-10-13 00:15:52,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:15:52,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:52,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:15:52,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:15:52,301 INFO L87 Difference]: Start difference. First operand 169 states and 180 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:16:00,584 WARN L207 SmtUtils]: Spent 7.32 s on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-10-13 00:16:28,474 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2021-10-13 00:16:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:16:31,942 INFO L93 Difference]: Finished difference Result 192 states and 205 transitions. [2021-10-13 00:16:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:16:31,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-13 00:16:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:16:31,943 INFO L225 Difference]: With dead ends: 192 [2021-10-13 00:16:31,944 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:16:31,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 22216.9ms TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:16:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:16:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:16:31,945 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 00:16:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:16:31,945 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2021-10-13 00:16:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:16:31,946 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:16:31,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:16:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:16:31,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:16:31,950 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:16:31,950 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:16:31,951 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:16:31,951 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:16:31,951 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:16:31,951 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:16:31,952 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:16:32,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 00:16:32,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:16:32,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:16:32,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:32,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:32,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:32,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:33,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:33,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:33,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:33,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:34,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:16:34,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:17:11,790 WARN L207 SmtUtils]: Spent 11.19 s on a formula simplification. DAG size of input: 131 DAG size of output: 26 [2021-10-13 00:17:11,793 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:17:11,793 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:17:11,793 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:17:11,793 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:17:11,793 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:17:11,794 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-13 00:17:11,794 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-10-13 00:17:11,794 INFO L853 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (<= 1 ULTIMATE.start_main_~y~0))) (let ((.cse4 (and .cse7 .cse8 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (.cse6 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (.cse5 (and .cse7 .cse8 (= ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 2)))) (let ((.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (< (div (+ (- 1) (* ULTIMATE.start_main_~r~0 (- 1))) (- 2)) (+ ULTIMATE.start_main_~y~0 1))) (.cse0 (or .cse4 (and .cse7 .cse8 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse6) .cse5)) (.cse3 (<= (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0))) (or (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and .cse2 .cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 10 ULTIMATE.start_main_~y~0))) .cse3 (= ULTIMATE.start_main_~q~0 10) (<= ~counter~0 8)) (and (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) .cse1 (or .cse4 .cse5)) (and .cse0 .cse1 .cse6) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 6 ULTIMATE.start_main_~y~0))) .cse2 .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~q~0 6) .cse3))))) [2021-10-13 00:17:11,794 INFO L857 garLoopResultBuilder]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-10-13 00:17:11,794 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:17:11,794 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-10-13 00:17:11,795 INFO L853 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_main_~a~0 1)) (.cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= 1 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~y~0))) (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) (<= ~counter~0 4) .cse3 .cse4 .cse6) (and .cse0 .cse1 .cse2 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-13 00:17:11,795 INFO L857 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-10-13 00:17:11,795 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:17:11,795 INFO L860 garLoopResultBuilder]: At program point L64(lines 23 65) the Hoare annotation is: true [2021-10-13 00:17:11,795 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:17:11,795 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:17:11,795 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_main_~q~0 1)) (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))))) [2021-10-13 00:17:11,795 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:17:11,796 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 41 42) the Hoare annotation is: (let ((.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (< (div (+ (- 1) (* ULTIMATE.start_main_~r~0 (- 1))) (- 2)) (+ ULTIMATE.start_main_~y~0 1))) (.cse6 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (<= (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) .cse3) (and .cse0 .cse4 .cse1 .cse2 .cse3 .cse5) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse6 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse2 (= ULTIMATE.start_main_~q~0 1)) (let ((.cse7 (* 2 ULTIMATE.start_main_~y~0))) (and .cse0 .cse4 .cse6 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse7)) (<= ~counter~0 4) (<= .cse7 ULTIMATE.start_main_~x~0) .cse5)))) [2021-10-13 00:17:11,796 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:17:11,796 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 1 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-13 00:17:11,796 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:17:11,796 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 1 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-13 00:17:11,797 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:17:11,797 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 51 52) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 1 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-13 00:17:11,797 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:17:11,797 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:17:11,797 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 1 ULTIMATE.start_main_~r~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) [2021-10-13 00:17:11,798 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:17:11,798 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-13 00:17:11,798 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:17:11,798 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:17:11,799 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:17:11,799 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:17:11,799 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:17:11,799 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:17:11,799 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:17:11,799 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:17:11,800 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:17:11,800 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:17:11,805 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:17:11,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:17:11 BoogieIcfgContainer [2021-10-13 00:17:11,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:17:11,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:17:11,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:17:11,841 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:17:11,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:14:49" (3/4) ... [2021-10-13 00:17:11,846 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:17:11,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-13 00:17:11,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:17:11,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:17:11,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:17:11,911 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:17:11,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:17:11,913 INFO L168 Benchmark]: Toolchain (without parser) took 143242.43 ms. Allocated memory was 121.6 MB in the beginning and 186.6 MB in the end (delta: 65.0 MB). Free memory was 92.2 MB in the beginning and 89.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 67.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:11,913 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 121.6 MB. Free memory is still 76.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:11,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.99 ms. Allocated memory is still 121.6 MB. Free memory was 91.9 MB in the beginning and 94.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:11,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.38 ms. Allocated memory is still 121.6 MB. Free memory was 94.5 MB in the beginning and 92.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:11,915 INFO L168 Benchmark]: Boogie Preprocessor took 43.13 ms. Allocated memory is still 121.6 MB. Free memory was 92.9 MB in the beginning and 91.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:11,915 INFO L168 Benchmark]: RCFGBuilder took 410.64 ms. Allocated memory is still 121.6 MB. Free memory was 91.7 MB in the beginning and 80.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:11,916 INFO L168 Benchmark]: TraceAbstraction took 142308.00 ms. Allocated memory was 121.6 MB in the beginning and 186.6 MB in the end (delta: 65.0 MB). Free memory was 80.2 MB in the beginning and 92.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 118.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:11,916 INFO L168 Benchmark]: Witness Printer took 70.57 ms. Allocated memory is still 186.6 MB. Free memory was 92.1 MB in the beginning and 89.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:11,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 121.6 MB. Free memory is still 76.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.99 ms. Allocated memory is still 121.6 MB. Free memory was 91.9 MB in the beginning and 94.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.38 ms. Allocated memory is still 121.6 MB. Free memory was 94.5 MB in the beginning and 92.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.13 ms. Allocated memory is still 121.6 MB. Free memory was 92.9 MB in the beginning and 91.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 410.64 ms. Allocated memory is still 121.6 MB. Free memory was 91.7 MB in the beginning and 80.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 142308.00 ms. Allocated memory was 121.6 MB in the beginning and 186.6 MB in the end (delta: 65.0 MB). Free memory was 80.2 MB in the beginning and 92.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 118.5 MB. Max. memory is 16.1 GB. * Witness Printer took 70.57 ms. Allocated memory is still 186.6 MB. Free memory was 92.1 MB in the beginning and 89.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 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, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 142194.2ms, OverallIterations: 32, TraceHistogramMax: 7, EmptinessCheckTime: 72.4ms, AutomataDifference: 72585.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 39626.4ms, InitialAbstractionConstructionTime: 17.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1066 SDtfs, 2243 SDslu, 3090 SDs, 0 SdLazy, 3412 SolverSat, 690 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 34868.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1399 GetRequests, 1100 SyntacticMatches, 2 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 39030.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=30, InterpolantAutomatonStates: 326, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 596.4ms AutomataMinimizationTime, 32 MinimizatonAttempts, 688 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 133 NumberOfFragments, 851 HoareAnnotationTreeSize, 10 FomulaSimplifications, 705460805 FormulaSimplificationTreeSizeReduction, 2743.2ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 13882008 FormulaSimplificationTreeSizeReductionInter, 36871.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 289.4ms SsaConstructionTime, 814.3ms SatisfiabilityAnalysisTime, 11977.5ms InterpolantComputationTime, 1305 NumberOfCodeBlocks, 1106 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 1273 ConstructedInterpolants, 0 QuantifiedInterpolants, 8197 SizeOfPredicates, 190 NumberOfNonLiveVariables, 4422 ConjunctsInSsa, 516 ConjunctsInUnsatCore, 32 InterpolantComputations, 10 PerfectInterpolantSequences, 397/1263 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: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && b == y) || ((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && b == y) || (((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0)) && x == r + q * y - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 <= cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && b == y) || ((((((cond == 1 && 1 <= cond) && 1 <= y) && 1 <= r) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && b == y) || ((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && b == y) || ((((((((cond == 1 && 1 <= cond) && q == 2) && x == r + 2 * y) && r < 2 * b) && counter <= 4) && a == 1) && 1 <= r) && b == y)) || ((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && 1 <= y) && b == a * y) && x == r + q * y) || (((((cond == 1 && (-1 + r * -1) / -2 < y + 1) && 1 == cond) && 1 <= y) && x == r + q * y) && b * -1 / -2 <= y)) || ((((((x == r + y && cond == 1) && 1 <= cond) && r < y) && b <= y) && 1 <= y) && q == 1)) || (((((((cond == 1 && (-1 + r * -1) / -2 < y + 1) && 1 <= cond) && q == 2) && x == r + 2 * y) && counter <= 4) && 2 * y <= x) && b * -1 / -2 <= y) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && 1 <= y) && a == 1) && b == y) || (((cond == 1 && 1 <= y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0)) || (((cond == 1 && 1 <= y) && b == 2 * y) && a == 2)) && 1 == cond) && x == r + q * y) || ((((((-1 + r * -1) / -2 < y + 1 && (((((cond == 1 && 1 <= y) && a == 1) && b == y) || (((cond == 1 && 1 <= y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0)) || (((cond == 1 && 1 <= y) && b == 2 * y) && a == 2))) && x == r + 10 * y) && b * -1 / -2 <= y) && q == 10) && counter <= 8)) || ((r < y && x == r + q * y) && ((((cond == 1 && 1 <= y) && a == 1) && b == y) || (((cond == 1 && 1 <= y) && b == 2 * y) && a == 2)))) || (((((((cond == 1 && 1 <= y) && a == 1) && b == y) || (((cond == 1 && 1 <= y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0)) || (((cond == 1 && 1 <= y) && b == 2 * y) && a == 2)) && x == r + q * y) && a % -2 == 0)) || (((((x == r + 6 * y && (-1 + r * -1) / -2 < y + 1) && (((((cond == 1 && 1 <= y) && a == 1) && b == y) || (((cond == 1 && 1 <= y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0)) || (((cond == 1 && 1 <= y) && b == 2 * y) && a == 2))) && 1 <= cond) && q == 6) && b * -1 / -2 <= y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((x == r + y && cond == 1) && r < y) && b <= y) && 1 <= y) && q == 1) || ((((cond == 1 && 1 == cond) && 1 <= y) && b == a * y) && x == r + q * y) RESULT: Ultimate proved your program to be correct! [2021-10-13 00:17:11,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ae2d4a8-82b8-46e1-8883-04db4d92b010/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...