./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be --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 fd73ab074a990e2fba4a8f87029e18649db9146d39c1908dcf3532d41f095922 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:18:05,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:18:05,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:18:05,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:18:05,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:18:05,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:18:05,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:18:05,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:18:05,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:18:05,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:18:05,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:18:05,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:18:05,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:18:05,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:18:05,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:18:05,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:18:05,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:18:05,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:18:05,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:18:05,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:18:05,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:18:05,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:18:05,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:18:05,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:18:05,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:18:05,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:18:05,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:18:05,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:18:05,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:18:05,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:18:05,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:18:05,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:18:05,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:18:05,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:18:05,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:18:05,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:18:05,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:18:05,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:18:05,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:18:05,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:18:05,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:18:05,213 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:18:05,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:18:05,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:18:05,256 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:18:05,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:18:05,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:18:05,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:18:05,257 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:18:05,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:18:05,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:18:05,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:18:05,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:18:05,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:18:05,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:18:05,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:18:05,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:18:05,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:18:05,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:18:05,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:18:05,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:18:05,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:18:05,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:18:05,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:18:05,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:18:05,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:18:05,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:18:05,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:18:05,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:18:05,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:18:05,261 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:18:05,262 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:18:05,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:18:05,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:18:05,262 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_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd73ab074a990e2fba4a8f87029e18649db9146d39c1908dcf3532d41f095922 [2021-10-21 19:18:05,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:18:05,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:18:05,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:18:05,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:18:05,623 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:18:05,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/eca-rers2012/Problem14_label23.c [2021-10-21 19:18:05,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/data/bec2c8977/9b7f7f973856491fac12427337f0fbfa/FLAGf81b4262c [2021-10-21 19:18:06,430 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:18:06,430 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/sv-benchmarks/c/eca-rers2012/Problem14_label23.c [2021-10-21 19:18:06,460 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/data/bec2c8977/9b7f7f973856491fac12427337f0fbfa/FLAGf81b4262c [2021-10-21 19:18:06,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/data/bec2c8977/9b7f7f973856491fac12427337f0fbfa [2021-10-21 19:18:06,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:18:06,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:18:06,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:18:06,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:18:06,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:18:06,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:18:06" (1/1) ... [2021-10-21 19:18:06,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5492d018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:06, skipping insertion in model container [2021-10-21 19:18:06,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:18:06" (1/1) ... [2021-10-21 19:18:06,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:18:06,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:18:06,904 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_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/sv-benchmarks/c/eca-rers2012/Problem14_label23.c[3423,3436] [2021-10-21 19:18:07,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:18:07,175 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:18:07,197 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_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/sv-benchmarks/c/eca-rers2012/Problem14_label23.c[3423,3436] [2021-10-21 19:18:07,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:18:07,347 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:18:07,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07 WrapperNode [2021-10-21 19:18:07,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:18:07,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:18:07,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:18:07,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:18:07,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (1/1) ... [2021-10-21 19:18:07,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (1/1) ... [2021-10-21 19:18:07,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:18:07,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:18:07,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:18:07,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:18:07,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (1/1) ... [2021-10-21 19:18:07,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (1/1) ... [2021-10-21 19:18:07,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (1/1) ... [2021-10-21 19:18:07,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (1/1) ... [2021-10-21 19:18:07,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (1/1) ... [2021-10-21 19:18:07,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (1/1) ... [2021-10-21 19:18:07,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (1/1) ... [2021-10-21 19:18:07,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:18:07,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:18:07,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:18:07,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:18:07,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (1/1) ... [2021-10-21 19:18:07,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:18:07,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:07,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:18:07,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:18:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:18:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:18:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:18:07,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:18:09,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:18:09,175 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 19:18:09,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:18:09 BoogieIcfgContainer [2021-10-21 19:18:09,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:18:09,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:18:09,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:18:09,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:18:09,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:18:06" (1/3) ... [2021-10-21 19:18:09,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edf38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:18:09, skipping insertion in model container [2021-10-21 19:18:09,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:18:07" (2/3) ... [2021-10-21 19:18:09,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edf38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:18:09, skipping insertion in model container [2021-10-21 19:18:09,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:18:09" (3/3) ... [2021-10-21 19:18:09,187 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label23.c [2021-10-21 19:18:09,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:18:09,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:18:09,246 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:18:09,253 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:18:09,254 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:18:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:18:09,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:09,285 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:09,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:09,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1317301102, now seen corresponding path program 1 times [2021-10-21 19:18:09,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:09,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807121156] [2021-10-21 19:18:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:09,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:09,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:09,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807121156] [2021-10-21 19:18:09,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807121156] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:09,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:09,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:18:09,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652605146] [2021-10-21 19:18:09,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:09,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:09,676 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 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 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:10,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:10,799 INFO L93 Difference]: Finished difference Result 669 states and 1200 transitions. [2021-10-21 19:18:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:10,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 19:18:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:10,817 INFO L225 Difference]: With dead ends: 669 [2021-10-21 19:18:10,817 INFO L226 Difference]: Without dead ends: 360 [2021-10-21 19:18:10,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-21 19:18:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-10-21 19:18:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.5208913649025069) internal successors, (546), 359 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 546 transitions. [2021-10-21 19:18:10,928 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 546 transitions. Word has length 32 [2021-10-21 19:18:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:10,929 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 546 transitions. [2021-10-21 19:18:10,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 546 transitions. [2021-10-21 19:18:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-21 19:18:10,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:10,934 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:10,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:18:10,935 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:10,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1737883567, now seen corresponding path program 1 times [2021-10-21 19:18:10,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:10,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786891925] [2021-10-21 19:18:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:10,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:11,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:11,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786891925] [2021-10-21 19:18:11,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786891925] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:11,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:11,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:18:11,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746274632] [2021-10-21 19:18:11,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:11,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:11,160 INFO L87 Difference]: Start difference. First operand 360 states and 546 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:12,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:12,044 INFO L93 Difference]: Finished difference Result 1076 states and 1634 transitions. [2021-10-21 19:18:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:12,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-10-21 19:18:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:12,049 INFO L225 Difference]: With dead ends: 1076 [2021-10-21 19:18:12,049 INFO L226 Difference]: Without dead ends: 718 [2021-10-21 19:18:12,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-10-21 19:18:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 716. [2021-10-21 19:18:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.3552447552447553) internal successors, (969), 715 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 969 transitions. [2021-10-21 19:18:12,092 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 969 transitions. Word has length 107 [2021-10-21 19:18:12,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:12,093 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 969 transitions. [2021-10-21 19:18:12,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:12,093 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 969 transitions. [2021-10-21 19:18:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-21 19:18:12,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:12,097 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:12,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:18:12,097 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:12,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1430044837, now seen corresponding path program 1 times [2021-10-21 19:18:12,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:12,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519140539] [2021-10-21 19:18:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:12,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:12,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:12,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519140539] [2021-10-21 19:18:12,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519140539] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:12,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:12,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:18:12,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870505148] [2021-10-21 19:18:12,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:18:12,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:12,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:18:12,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:18:12,329 INFO L87 Difference]: Start difference. First operand 716 states and 969 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:13,502 INFO L93 Difference]: Finished difference Result 1966 states and 2575 transitions. [2021-10-21 19:18:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:18:13,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-10-21 19:18:13,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:13,511 INFO L225 Difference]: With dead ends: 1966 [2021-10-21 19:18:13,511 INFO L226 Difference]: Without dead ends: 1252 [2021-10-21 19:18:13,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:18:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-10-21 19:18:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1250. [2021-10-21 19:18:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.2377902321857486) internal successors, (1546), 1249 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1546 transitions. [2021-10-21 19:18:13,551 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1546 transitions. Word has length 111 [2021-10-21 19:18:13,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:13,551 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1546 transitions. [2021-10-21 19:18:13,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1546 transitions. [2021-10-21 19:18:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-10-21 19:18:13,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:13,557 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:13,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:18:13,558 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:13,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:13,558 INFO L82 PathProgramCache]: Analyzing trace with hash 872689753, now seen corresponding path program 1 times [2021-10-21 19:18:13,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:13,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333238916] [2021-10-21 19:18:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:13,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:18:13,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:13,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333238916] [2021-10-21 19:18:13,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333238916] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:13,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:13,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:18:13,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838749269] [2021-10-21 19:18:13,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:18:13,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:18:13,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:18:13,689 INFO L87 Difference]: Start difference. First operand 1250 states and 1546 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:14,452 INFO L93 Difference]: Finished difference Result 2707 states and 3359 transitions. [2021-10-21 19:18:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:18:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2021-10-21 19:18:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:14,461 INFO L225 Difference]: With dead ends: 2707 [2021-10-21 19:18:14,462 INFO L226 Difference]: Without dead ends: 1608 [2021-10-21 19:18:14,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:18:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-10-21 19:18:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2021-10-21 19:18:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.12398753894081) internal successors, (1804), 1605 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:14,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1804 transitions. [2021-10-21 19:18:14,502 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1804 transitions. Word has length 191 [2021-10-21 19:18:14,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:14,503 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 1804 transitions. [2021-10-21 19:18:14,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:14,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1804 transitions. [2021-10-21 19:18:14,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-10-21 19:18:14,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:14,507 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:14,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:18:14,508 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:14,508 INFO L82 PathProgramCache]: Analyzing trace with hash -925926840, now seen corresponding path program 1 times [2021-10-21 19:18:14,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:14,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145582497] [2021-10-21 19:18:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:14,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 137 proven. 130 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-21 19:18:14,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:14,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145582497] [2021-10-21 19:18:14,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145582497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:14,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079106094] [2021-10-21 19:18:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:14,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:14,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:14,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:14,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:18:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:14,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:18:14,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-10-21 19:18:16,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079106094] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:16,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:18:16,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-10-21 19:18:16,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813466348] [2021-10-21 19:18:16,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:16,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:18:16,198 INFO L87 Difference]: Start difference. First operand 1606 states and 1804 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:16,899 INFO L93 Difference]: Finished difference Result 3388 states and 3907 transitions. [2021-10-21 19:18:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:16,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 318 [2021-10-21 19:18:16,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:16,912 INFO L225 Difference]: With dead ends: 3388 [2021-10-21 19:18:16,912 INFO L226 Difference]: Without dead ends: 1962 [2021-10-21 19:18:16,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:18:16,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-10-21 19:18:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1962. [2021-10-21 19:18:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.122386537480877) internal successors, (2201), 1961 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2201 transitions. [2021-10-21 19:18:16,976 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2201 transitions. Word has length 318 [2021-10-21 19:18:16,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:16,977 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2201 transitions. [2021-10-21 19:18:16,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:16,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2201 transitions. [2021-10-21 19:18:16,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-10-21 19:18:16,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:16,984 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:17,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:17,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:17,210 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:17,211 INFO L82 PathProgramCache]: Analyzing trace with hash 831866558, now seen corresponding path program 1 times [2021-10-21 19:18:17,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:17,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628150011] [2021-10-21 19:18:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:17,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-21 19:18:17,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:17,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628150011] [2021-10-21 19:18:17,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628150011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:17,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:17,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:18:17,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43603834] [2021-10-21 19:18:17,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:17,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:17,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:17,440 INFO L87 Difference]: Start difference. First operand 1962 states and 2201 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:18,124 INFO L93 Difference]: Finished difference Result 4100 states and 4648 transitions. [2021-10-21 19:18:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:18,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 322 [2021-10-21 19:18:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:18,138 INFO L225 Difference]: With dead ends: 4100 [2021-10-21 19:18:18,138 INFO L226 Difference]: Without dead ends: 2318 [2021-10-21 19:18:18,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-10-21 19:18:18,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2318. [2021-10-21 19:18:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.1204143288735433) internal successors, (2596), 2317 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2596 transitions. [2021-10-21 19:18:18,208 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2596 transitions. Word has length 322 [2021-10-21 19:18:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:18,211 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2596 transitions. [2021-10-21 19:18:18,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2596 transitions. [2021-10-21 19:18:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-10-21 19:18:18,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:18,221 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-10-21 19:18:18,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:18:18,222 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:18,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:18,232 INFO L82 PathProgramCache]: Analyzing trace with hash -376217468, now seen corresponding path program 1 times [2021-10-21 19:18:18,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:18,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838749643] [2021-10-21 19:18:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:18,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-10-21 19:18:18,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:18,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838749643] [2021-10-21 19:18:18,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838749643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:18,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030022021] [2021-10-21 19:18:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:18,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:18,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:18,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:18,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:18:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:18,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:18:18,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-21 19:18:19,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030022021] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:19,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:18:19,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-10-21 19:18:19,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886982299] [2021-10-21 19:18:19,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:19,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:18:19,900 INFO L87 Difference]: Start difference. First operand 2318 states and 2596 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:20,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:20,491 INFO L93 Difference]: Finished difference Result 2854 states and 3202 transitions. [2021-10-21 19:18:20,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:20,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 349 [2021-10-21 19:18:20,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:20,510 INFO L225 Difference]: With dead ends: 2854 [2021-10-21 19:18:20,511 INFO L226 Difference]: Without dead ends: 2852 [2021-10-21 19:18:20,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:18:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-10-21 19:18:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2496. [2021-10-21 19:18:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.1254509018036072) internal successors, (2808), 2495 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2808 transitions. [2021-10-21 19:18:20,608 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2808 transitions. Word has length 349 [2021-10-21 19:18:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:20,608 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 2808 transitions. [2021-10-21 19:18:20,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2808 transitions. [2021-10-21 19:18:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-10-21 19:18:20,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:20,617 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:20,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-21 19:18:20,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:20,846 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:20,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:20,847 INFO L82 PathProgramCache]: Analyzing trace with hash 255466610, now seen corresponding path program 1 times [2021-10-21 19:18:20,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:20,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301167838] [2021-10-21 19:18:20,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:20,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-10-21 19:18:21,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:21,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301167838] [2021-10-21 19:18:21,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301167838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:21,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:21,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:18:21,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956167715] [2021-10-21 19:18:21,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:18:21,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:21,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:18:21,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:18:21,030 INFO L87 Difference]: Start difference. First operand 2496 states and 2808 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:21,786 INFO L93 Difference]: Finished difference Result 5048 states and 5689 transitions. [2021-10-21 19:18:21,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:18:21,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 402 [2021-10-21 19:18:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:21,802 INFO L225 Difference]: With dead ends: 5048 [2021-10-21 19:18:21,802 INFO L226 Difference]: Without dead ends: 2674 [2021-10-21 19:18:21,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:18:21,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-10-21 19:18:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2496. [2021-10-21 19:18:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.0849699398797594) internal successors, (2707), 2495 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2707 transitions. [2021-10-21 19:18:21,910 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2707 transitions. Word has length 402 [2021-10-21 19:18:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:21,911 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 2707 transitions. [2021-10-21 19:18:21,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:21,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2707 transitions. [2021-10-21 19:18:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-10-21 19:18:21,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:21,928 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:21,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:18:21,931 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:21,933 INFO L82 PathProgramCache]: Analyzing trace with hash 371450483, now seen corresponding path program 2 times [2021-10-21 19:18:21,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:21,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505958457] [2021-10-21 19:18:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:21,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 369 proven. 195 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-21 19:18:22,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:22,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505958457] [2021-10-21 19:18:22,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505958457] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:22,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188027381] [2021-10-21 19:18:22,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:18:22,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:22,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:22,230 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:22,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:18:22,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:18:22,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:18:22,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:18:22,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-10-21 19:18:24,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188027381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:24,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:18:24,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2021-10-21 19:18:24,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217583269] [2021-10-21 19:18:24,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:18:24,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:18:24,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:18:24,791 INFO L87 Difference]: Start difference. First operand 2496 states and 2707 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:25,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:25,910 INFO L93 Difference]: Finished difference Result 5938 states and 6502 transitions. [2021-10-21 19:18:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:18:25,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 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 428 [2021-10-21 19:18:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:25,934 INFO L225 Difference]: With dead ends: 5938 [2021-10-21 19:18:25,934 INFO L226 Difference]: Without dead ends: 3622 [2021-10-21 19:18:25,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:18:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2021-10-21 19:18:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3030. [2021-10-21 19:18:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3029 states have (on average 1.0746120831957742) internal successors, (3255), 3029 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3255 transitions. [2021-10-21 19:18:26,020 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3255 transitions. Word has length 428 [2021-10-21 19:18:26,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:26,021 INFO L470 AbstractCegarLoop]: Abstraction has 3030 states and 3255 transitions. [2021-10-21 19:18:26,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:26,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3255 transitions. [2021-10-21 19:18:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-10-21 19:18:26,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:26,026 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:26,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:26,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:26,254 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:26,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:26,255 INFO L82 PathProgramCache]: Analyzing trace with hash -628974162, now seen corresponding path program 1 times [2021-10-21 19:18:26,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:26,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386741394] [2021-10-21 19:18:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:26,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-10-21 19:18:26,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:26,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386741394] [2021-10-21 19:18:26,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386741394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:26,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:26,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:18:26,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387732860] [2021-10-21 19:18:26,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:26,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:26,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:26,483 INFO L87 Difference]: Start difference. First operand 3030 states and 3255 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:27,100 INFO L93 Difference]: Finished difference Result 6414 states and 6969 transitions. [2021-10-21 19:18:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 435 [2021-10-21 19:18:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:27,120 INFO L225 Difference]: With dead ends: 6414 [2021-10-21 19:18:27,121 INFO L226 Difference]: Without dead ends: 3564 [2021-10-21 19:18:27,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:27,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2021-10-21 19:18:27,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3208. [2021-10-21 19:18:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0792017461802308) internal successors, (3461), 3207 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:27,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3461 transitions. [2021-10-21 19:18:27,211 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3461 transitions. Word has length 435 [2021-10-21 19:18:27,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:27,212 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3461 transitions. [2021-10-21 19:18:27,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3461 transitions. [2021-10-21 19:18:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-10-21 19:18:27,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:27,217 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:27,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:18:27,218 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:27,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:27,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1105193589, now seen corresponding path program 1 times [2021-10-21 19:18:27,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:27,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38729254] [2021-10-21 19:18:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:27,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 369 proven. 195 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-21 19:18:27,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:27,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38729254] [2021-10-21 19:18:27,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38729254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:27,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814339025] [2021-10-21 19:18:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:27,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:27,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:27,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:18:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:28,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:18:28,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-21 19:18:31,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814339025] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:31,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:18:31,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-10-21 19:18:31,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762926421] [2021-10-21 19:18:31,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:18:31,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:31,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:18:31,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:18:31,656 INFO L87 Difference]: Start difference. First operand 3208 states and 3461 transitions. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:32,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:32,246 INFO L93 Difference]: Finished difference Result 6323 states and 6837 transitions. [2021-10-21 19:18:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:18:32,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 480 [2021-10-21 19:18:32,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:32,266 INFO L225 Difference]: With dead ends: 6323 [2021-10-21 19:18:32,266 INFO L226 Difference]: Without dead ends: 3473 [2021-10-21 19:18:32,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:18:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2021-10-21 19:18:32,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 3208. [2021-10-21 19:18:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0735890240099781) internal successors, (3443), 3207 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:32,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3443 transitions. [2021-10-21 19:18:32,392 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3443 transitions. Word has length 480 [2021-10-21 19:18:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:32,393 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3443 transitions. [2021-10-21 19:18:32,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3443 transitions. [2021-10-21 19:18:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-10-21 19:18:32,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:32,401 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:32,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:32,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-21 19:18:32,630 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:32,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:32,631 INFO L82 PathProgramCache]: Analyzing trace with hash 20778745, now seen corresponding path program 1 times [2021-10-21 19:18:32,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:32,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068490253] [2021-10-21 19:18:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:32,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 664 proven. 93 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-10-21 19:18:32,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:32,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068490253] [2021-10-21 19:18:32,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068490253] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:32,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481736185] [2021-10-21 19:18:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:32,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:32,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:32,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:33,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:18:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:34,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:18:34,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 757 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-10-21 19:18:35,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481736185] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:35,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:18:35,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-21 19:18:35,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584830742] [2021-10-21 19:18:35,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:35,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:35,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:18:35,372 INFO L87 Difference]: Start difference. First operand 3208 states and 3443 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:35,928 INFO L93 Difference]: Finished difference Result 7126 states and 7709 transitions. [2021-10-21 19:18:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:35,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 610 [2021-10-21 19:18:35,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:35,994 INFO L225 Difference]: With dead ends: 7126 [2021-10-21 19:18:35,994 INFO L226 Difference]: Without dead ends: 4276 [2021-10-21 19:18:35,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:18:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-10-21 19:18:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4276. [2021-10-21 19:18:36,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4275 states have (on average 1.0687719298245615) internal successors, (4569), 4275 states have internal predecessors, (4569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 4569 transitions. [2021-10-21 19:18:36,097 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 4569 transitions. Word has length 610 [2021-10-21 19:18:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:36,098 INFO L470 AbstractCegarLoop]: Abstraction has 4276 states and 4569 transitions. [2021-10-21 19:18:36,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 4569 transitions. [2021-10-21 19:18:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2021-10-21 19:18:36,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:36,114 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:36,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:36,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 19:18:36,340 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:36,340 INFO L82 PathProgramCache]: Analyzing trace with hash 163148934, now seen corresponding path program 1 times [2021-10-21 19:18:36,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:36,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984063698] [2021-10-21 19:18:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:36,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 1195 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2021-10-21 19:18:36,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:36,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984063698] [2021-10-21 19:18:36,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984063698] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:36,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:36,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:18:36,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130741501] [2021-10-21 19:18:36,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:36,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:36,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:36,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:36,595 INFO L87 Difference]: Start difference. First operand 4276 states and 4569 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:37,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:37,109 INFO L93 Difference]: Finished difference Result 8372 states and 8957 transitions. [2021-10-21 19:18:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:37,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 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 732 [2021-10-21 19:18:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:37,118 INFO L225 Difference]: With dead ends: 8372 [2021-10-21 19:18:37,119 INFO L226 Difference]: Without dead ends: 4276 [2021-10-21 19:18:37,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:37,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-10-21 19:18:37,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 3742. [2021-10-21 19:18:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.074044373162256) internal successors, (4018), 3741 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:37,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4018 transitions. [2021-10-21 19:18:37,228 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4018 transitions. Word has length 732 [2021-10-21 19:18:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:37,229 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 4018 transitions. [2021-10-21 19:18:37,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4018 transitions. [2021-10-21 19:18:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2021-10-21 19:18:37,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:37,241 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:37,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 19:18:37,242 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:37,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:37,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1308583808, now seen corresponding path program 1 times [2021-10-21 19:18:37,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:37,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346144525] [2021-10-21 19:18:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:37,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 1189 proven. 155 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-10-21 19:18:37,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:37,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346144525] [2021-10-21 19:18:37,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346144525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:37,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864073840] [2021-10-21 19:18:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:37,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:37,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:37,534 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:37,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:18:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:38,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:18:38,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 1189 proven. 155 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-10-21 19:18:40,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864073840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:40,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:40,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:18:40,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546104542] [2021-10-21 19:18:40,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:18:40,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:18:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:18:40,479 INFO L87 Difference]: Start difference. First operand 3742 states and 4018 transitions. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:41,189 INFO L93 Difference]: Finished difference Result 8728 states and 9408 transitions. [2021-10-21 19:18:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:18:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 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 765 [2021-10-21 19:18:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:41,198 INFO L225 Difference]: With dead ends: 8728 [2021-10-21 19:18:41,198 INFO L226 Difference]: Without dead ends: 5166 [2021-10-21 19:18:41,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:18:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2021-10-21 19:18:41,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 4632. [2021-10-21 19:18:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4631 states have (on average 1.0770891816022456) internal successors, (4988), 4631 states have internal predecessors, (4988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 4988 transitions. [2021-10-21 19:18:41,288 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 4988 transitions. Word has length 765 [2021-10-21 19:18:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:41,289 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 4988 transitions. [2021-10-21 19:18:41,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 4988 transitions. [2021-10-21 19:18:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2021-10-21 19:18:41,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:41,335 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:41,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:41,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:41,535 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:41,536 INFO L82 PathProgramCache]: Analyzing trace with hash -558075465, now seen corresponding path program 1 times [2021-10-21 19:18:41,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:41,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045289156] [2021-10-21 19:18:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:41,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 1623 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-10-21 19:18:41,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:41,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045289156] [2021-10-21 19:18:41,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045289156] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:41,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:41,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:18:41,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903103644] [2021-10-21 19:18:41,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:41,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:41,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:41,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:41,890 INFO L87 Difference]: Start difference. First operand 4632 states and 4988 transitions. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:42,404 INFO L93 Difference]: Finished difference Result 9440 states and 10160 transitions. [2021-10-21 19:18:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:42,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 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 816 [2021-10-21 19:18:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:42,412 INFO L225 Difference]: With dead ends: 9440 [2021-10-21 19:18:42,412 INFO L226 Difference]: Without dead ends: 4988 [2021-10-21 19:18:42,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:42,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-10-21 19:18:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4810. [2021-10-21 19:18:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0684133915574963) internal successors, (5138), 4809 states have internal predecessors, (5138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 5138 transitions. [2021-10-21 19:18:42,556 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 5138 transitions. Word has length 816 [2021-10-21 19:18:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:42,556 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 5138 transitions. [2021-10-21 19:18:42,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 5138 transitions. [2021-10-21 19:18:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2021-10-21 19:18:42,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:42,568 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:42,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-21 19:18:42,569 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:42,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:42,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1506221346, now seen corresponding path program 1 times [2021-10-21 19:18:42,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:42,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610989423] [2021-10-21 19:18:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:42,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2164 backedges. 1385 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2021-10-21 19:18:42,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:42,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610989423] [2021-10-21 19:18:42,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610989423] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:42,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:42,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:18:42,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35738865] [2021-10-21 19:18:42,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:42,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:42,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:42,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:42,965 INFO L87 Difference]: Start difference. First operand 4810 states and 5138 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:43,556 INFO L93 Difference]: Finished difference Result 10330 states and 11105 transitions. [2021-10-21 19:18:43,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:43,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 840 [2021-10-21 19:18:43,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:43,567 INFO L225 Difference]: With dead ends: 10330 [2021-10-21 19:18:43,567 INFO L226 Difference]: Without dead ends: 5700 [2021-10-21 19:18:43,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:43,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2021-10-21 19:18:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5344. [2021-10-21 19:18:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.0707467714766985) internal successors, (5721), 5343 states have internal predecessors, (5721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 5721 transitions. [2021-10-21 19:18:43,672 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 5721 transitions. Word has length 840 [2021-10-21 19:18:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:43,673 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 5721 transitions. [2021-10-21 19:18:43,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 5721 transitions. [2021-10-21 19:18:43,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2021-10-21 19:18:43,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:43,692 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:43,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-21 19:18:43,692 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:43,693 INFO L82 PathProgramCache]: Analyzing trace with hash -931637660, now seen corresponding path program 1 times [2021-10-21 19:18:43,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:43,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458486817] [2021-10-21 19:18:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:43,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 1617 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2021-10-21 19:18:44,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:44,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458486817] [2021-10-21 19:18:44,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458486817] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:44,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:44,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:18:44,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327368472] [2021-10-21 19:18:44,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:44,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:44,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:44,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:44,097 INFO L87 Difference]: Start difference. First operand 5344 states and 5721 transitions. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:44,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:44,746 INFO L93 Difference]: Finished difference Result 10330 states and 11081 transitions. [2021-10-21 19:18:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:44,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 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 897 [2021-10-21 19:18:44,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:44,758 INFO L225 Difference]: With dead ends: 10330 [2021-10-21 19:18:44,758 INFO L226 Difference]: Without dead ends: 5166 [2021-10-21 19:18:44,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:18:44,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2021-10-21 19:18:44,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 5166. [2021-10-21 19:18:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.0619554695062923) internal successors, (5485), 5165 states have internal predecessors, (5485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 5485 transitions. [2021-10-21 19:18:44,921 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 5485 transitions. Word has length 897 [2021-10-21 19:18:44,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:44,922 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 5485 transitions. [2021-10-21 19:18:44,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:44,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 5485 transitions. [2021-10-21 19:18:44,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2021-10-21 19:18:44,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:44,943 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2021-10-21 19:18:44,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-21 19:18:44,944 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:44,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:44,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1984770699, now seen corresponding path program 1 times [2021-10-21 19:18:44,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:44,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370904535] [2021-10-21 19:18:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:44,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2745 backedges. 103 proven. 136 refuted. 0 times theorem prover too weak. 2506 trivial. 0 not checked. [2021-10-21 19:18:45,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:45,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370904535] [2021-10-21 19:18:45,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370904535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:45,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386518600] [2021-10-21 19:18:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:45,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:45,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:45,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:45,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:18:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:46,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:18:46,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2745 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 2506 trivial. 0 not checked. [2021-10-21 19:18:48,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386518600] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:48,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:18:48,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-21 19:18:48,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823721721] [2021-10-21 19:18:48,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:48,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:48,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:48,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:18:48,653 INFO L87 Difference]: Start difference. First operand 5166 states and 5485 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:49,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:49,138 INFO L93 Difference]: Finished difference Result 6770 states and 7147 transitions. [2021-10-21 19:18:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:49,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 935 [2021-10-21 19:18:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:49,152 INFO L225 Difference]: With dead ends: 6770 [2021-10-21 19:18:49,152 INFO L226 Difference]: Without dead ends: 6768 [2021-10-21 19:18:49,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:18:49,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2021-10-21 19:18:49,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 5166. [2021-10-21 19:18:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.0619554695062923) internal successors, (5485), 5165 states have internal predecessors, (5485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 5485 transitions. [2021-10-21 19:18:49,240 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 5485 transitions. Word has length 935 [2021-10-21 19:18:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:49,241 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 5485 transitions. [2021-10-21 19:18:49,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:49,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 5485 transitions. [2021-10-21 19:18:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2021-10-21 19:18:49,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:49,253 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2021-10-21 19:18:49,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:49,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 19:18:49,478 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:49,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2092779240, now seen corresponding path program 1 times [2021-10-21 19:18:49,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:49,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169004712] [2021-10-21 19:18:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:49,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2835 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 2596 trivial. 0 not checked. [2021-10-21 19:18:49,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:49,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169004712] [2021-10-21 19:18:49,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169004712] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:49,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:18:49,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:18:49,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177383420] [2021-10-21 19:18:49,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:18:49,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:49,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:18:49,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:18:49,901 INFO L87 Difference]: Start difference. First operand 5166 states and 5485 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:50,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:50,535 INFO L93 Difference]: Finished difference Result 10018 states and 10641 transitions. [2021-10-21 19:18:50,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:18:50,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 953 [2021-10-21 19:18:50,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:50,548 INFO L225 Difference]: With dead ends: 10018 [2021-10-21 19:18:50,548 INFO L226 Difference]: Without dead ends: 4988 [2021-10-21 19:18:50,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:18:50,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-10-21 19:18:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4988. [2021-10-21 19:18:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.0603569280128333) internal successors, (5288), 4987 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5288 transitions. [2021-10-21 19:18:50,647 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5288 transitions. Word has length 953 [2021-10-21 19:18:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:50,649 INFO L470 AbstractCegarLoop]: Abstraction has 4988 states and 5288 transitions. [2021-10-21 19:18:50,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5288 transitions. [2021-10-21 19:18:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2021-10-21 19:18:50,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:50,673 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:18:50,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-21 19:18:50,674 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:18:50,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:50,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1642809293, now seen corresponding path program 1 times [2021-10-21 19:18:50,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:50,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313334403] [2021-10-21 19:18:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:50,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3615 backedges. 1585 proven. 82 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-10-21 19:18:51,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:51,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313334403] [2021-10-21 19:18:51,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313334403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:51,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839274510] [2021-10-21 19:18:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:51,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:51,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:51,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:51,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:18:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:52,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:18:52,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3615 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 3346 trivial. 0 not checked. [2021-10-21 19:18:54,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839274510] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:18:54,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:18:54,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-10-21 19:18:54,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386024631] [2021-10-21 19:18:54,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:18:54,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:18:54,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:18:54,966 INFO L87 Difference]: Start difference. First operand 4988 states and 5288 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:55,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:55,388 INFO L93 Difference]: Finished difference Result 10862 states and 11495 transitions. [2021-10-21 19:18:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:18:55,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 1093 [2021-10-21 19:18:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:55,390 INFO L225 Difference]: With dead ends: 10862 [2021-10-21 19:18:55,390 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:18:55,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1097 GetRequests, 1092 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:18:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:18:55,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:18:55,399 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) [2021-10-21 19:18:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:18:55,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1093 [2021-10-21 19:18:55,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:55,400 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:18:55,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:18:55,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:18:55,403 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:18:55,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-21 19:18:55,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:55,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:18:55,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:18:55,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:18:55,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:18:56,107 INFO L857 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-10-21 19:18:56,107 INFO L857 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-10-21 19:18:56,107 INFO L857 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-10-21 19:18:56,107 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-10-21 19:18:56,107 INFO L857 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-10-21 19:18:56,108 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-10-21 19:18:56,109 INFO L857 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-10-21 19:18:56,110 INFO L857 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-10-21 19:18:56,110 INFO L857 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,110 INFO L857 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,110 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,110 INFO L857 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-10-21 19:18:56,110 INFO L857 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-10-21 19:18:56,110 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-10-21 19:18:56,110 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-21 19:18:56,110 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-10-21 19:18:56,110 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-10-21 19:18:56,111 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-10-21 19:18:56,112 INFO L857 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-10-21 19:18:56,112 INFO L857 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,112 INFO L857 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,112 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,112 INFO L857 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-10-21 19:18:56,112 INFO L857 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-10-21 19:18:56,112 INFO L857 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-10-21 19:18:56,112 INFO L857 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-10-21 19:18:56,112 INFO L857 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-10-21 19:18:56,112 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-10-21 19:18:56,113 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-10-21 19:18:56,117 INFO L857 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-10-21 19:18:56,118 INFO L857 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-10-21 19:18:56,118 INFO L857 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-10-21 19:18:56,118 INFO L857 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,118 INFO L857 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,118 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,118 INFO L857 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-10-21 19:18:56,119 INFO L857 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-10-21 19:18:56,119 INFO L857 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-10-21 19:18:56,119 INFO L857 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-10-21 19:18:56,119 INFO L857 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-10-21 19:18:56,119 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-10-21 19:18:56,119 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-10-21 19:18:56,119 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:18:56,120 INFO L857 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,120 INFO L857 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,120 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,120 INFO L857 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-10-21 19:18:56,120 INFO L857 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-10-21 19:18:56,120 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-21 19:18:56,121 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-21 19:18:56,121 INFO L857 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-10-21 19:18:56,121 INFO L857 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-10-21 19:18:56,121 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-10-21 19:18:56,121 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-10-21 19:18:56,121 INFO L857 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-10-21 19:18:56,121 INFO L857 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,122 INFO L857 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,122 INFO L857 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,122 INFO L857 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-10-21 19:18:56,122 INFO L857 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-10-21 19:18:56,122 INFO L857 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-10-21 19:18:56,122 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-21 19:18:56,123 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-10-21 19:18:56,123 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-10-21 19:18:56,123 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-10-21 19:18:56,123 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-10-21 19:18:56,123 INFO L857 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,123 INFO L857 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,123 INFO L857 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,124 INFO L857 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-10-21 19:18:56,124 INFO L857 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-10-21 19:18:56,124 INFO L857 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-10-21 19:18:56,124 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:18:56,124 INFO L857 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-10-21 19:18:56,124 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 110) no Hoare annotation was computed. [2021-10-21 19:18:56,125 INFO L857 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-10-21 19:18:56,125 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-10-21 19:18:56,125 INFO L857 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-10-21 19:18:56,125 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-10-21 19:18:56,125 INFO L857 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,125 INFO L857 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,126 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,126 INFO L857 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-10-21 19:18:56,126 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-10-21 19:18:56,126 INFO L857 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-10-21 19:18:56,126 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-10-21 19:18:56,126 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-21 19:18:56,127 INFO L857 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-10-21 19:18:56,127 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-10-21 19:18:56,127 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-10-21 19:18:56,127 INFO L857 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,127 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,127 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,127 INFO L857 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-10-21 19:18:56,128 INFO L857 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-10-21 19:18:56,128 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-21 19:18:56,128 INFO L857 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-10-21 19:18:56,128 INFO L857 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-10-21 19:18:56,128 INFO L857 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-10-21 19:18:56,128 INFO L857 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-10-21 19:18:56,128 INFO L857 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-10-21 19:18:56,129 INFO L857 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,129 INFO L857 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,129 INFO L857 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,129 INFO L857 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-10-21 19:18:56,129 INFO L857 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-10-21 19:18:56,129 INFO L857 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-10-21 19:18:56,130 INFO L857 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-10-21 19:18:56,130 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-21 19:18:56,130 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-10-21 19:18:56,130 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-10-21 19:18:56,130 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-10-21 19:18:56,130 INFO L857 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,131 INFO L857 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,131 INFO L857 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,131 INFO L857 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-10-21 19:18:56,131 INFO L857 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-10-21 19:18:56,131 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-21 19:18:56,131 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-21 19:18:56,131 INFO L857 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-10-21 19:18:56,132 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-10-21 19:18:56,132 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-10-21 19:18:56,132 INFO L857 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-10-21 19:18:56,132 INFO L857 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,132 INFO L857 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,132 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,133 INFO L857 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-10-21 19:18:56,133 INFO L857 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-10-21 19:18:56,133 INFO L857 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-10-21 19:18:56,133 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-21 19:18:56,133 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-10-21 19:18:56,133 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-10-21 19:18:56,133 INFO L857 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-10-21 19:18:56,134 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-10-21 19:18:56,134 INFO L857 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,134 INFO L857 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,134 INFO L857 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-10-21 19:18:56,134 INFO L857 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-10-21 19:18:56,134 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-21 19:18:56,135 INFO L857 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-10-21 19:18:56,135 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-10-21 19:18:56,135 INFO L857 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-10-21 19:18:56,135 INFO L857 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-10-21 19:18:56,135 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-10-21 19:18:56,135 INFO L857 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,135 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,136 INFO L857 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-10-21 19:18:56,136 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:18:56,136 INFO L857 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-10-21 19:18:56,136 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-21 19:18:56,136 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-10-21 19:18:56,136 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-10-21 19:18:56,137 INFO L857 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-10-21 19:18:56,137 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,137 INFO L857 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,137 INFO L853 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse0 (= ~a24~0 1)) (.cse1 (<= ~a15~0 5))) (or (and (<= 7 ~a15~0) .cse0) (and (<= ~a12~0 11) .cse0 (< 0 (+ ~a12~0 43))) (and (<= ~a21~0 9) .cse0) (and .cse0 .cse1) (and (<= ~a21~0 7) (<= (+ 49 ~a12~0) 0) .cse1))) [2021-10-21 19:18:56,137 INFO L857 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-10-21 19:18:56,138 INFO L857 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-10-21 19:18:56,138 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-21 19:18:56,138 INFO L857 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-10-21 19:18:56,138 INFO L857 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-10-21 19:18:56,138 INFO L857 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-10-21 19:18:56,138 INFO L857 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-10-21 19:18:56,139 INFO L857 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-10-21 19:18:56,139 INFO L857 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,139 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,139 INFO L860 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-10-21 19:18:56,139 INFO L857 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-10-21 19:18:56,139 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-10-21 19:18:56,140 INFO L857 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-10-21 19:18:56,140 INFO L857 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-10-21 19:18:56,140 INFO L857 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-10-21 19:18:56,140 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-10-21 19:18:56,140 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-10-21 19:18:56,140 INFO L857 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,141 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,141 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:18:56,141 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-10-21 19:18:56,141 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-10-21 19:18:56,141 INFO L857 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-10-21 19:18:56,141 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-10-21 19:18:56,141 INFO L857 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-10-21 19:18:56,142 INFO L857 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-10-21 19:18:56,142 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,142 INFO L857 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,142 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-21 19:18:56,142 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,142 INFO L857 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-10-21 19:18:56,144 INFO L853 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse0 (= ~a24~0 1)) (.cse1 (<= ~a15~0 5))) (or (and (<= 7 ~a15~0) .cse0) (and (<= ~a12~0 11) .cse0 (< 0 (+ ~a12~0 43))) (and (<= ~a21~0 9) .cse0) (and .cse0 .cse1) (and (<= ~a21~0 7) (<= (+ 49 ~a12~0) 0) .cse1))) [2021-10-21 19:18:56,144 INFO L857 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-10-21 19:18:56,144 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-10-21 19:18:56,144 INFO L857 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-10-21 19:18:56,145 INFO L857 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-10-21 19:18:56,145 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-21 19:18:56,145 INFO L857 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-10-21 19:18:56,145 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-10-21 19:18:56,145 INFO L857 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-10-21 19:18:56,145 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-10-21 19:18:56,146 INFO L857 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,146 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,146 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 19:18:56,146 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-10-21 19:18:56,146 INFO L857 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-10-21 19:18:56,146 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-21 19:18:56,147 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-21 19:18:56,153 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:18:56,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:18:56 BoogieIcfgContainer [2021-10-21 19:18:56,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:18:56,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:18:56,179 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:18:56,179 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:18:56,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:18:09" (3/4) ... [2021-10-21 19:18:56,185 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:18:56,219 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 19:18:56,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:18:56,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:18:56,224 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:18:56,360 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:18:56,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:18:56,361 INFO L168 Benchmark]: Toolchain (without parser) took 49701.40 ms. Allocated memory was 94.4 MB in the beginning and 790.6 MB in the end (delta: 696.3 MB). Free memory was 65.5 MB in the beginning and 312.8 MB in the end (delta: -247.3 MB). Peak memory consumption was 450.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:56,362 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory is still 65.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:18:56,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.73 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 65.3 MB in the beginning and 100.2 MB in the end (delta: -34.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:56,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.46 ms. Allocated memory is still 125.8 MB. Free memory was 100.2 MB in the beginning and 90.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:56,363 INFO L168 Benchmark]: Boogie Preprocessor took 124.43 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 84.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:56,363 INFO L168 Benchmark]: RCFGBuilder took 1590.68 ms. Allocated memory is still 125.8 MB. Free memory was 84.7 MB in the beginning and 68.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:56,364 INFO L168 Benchmark]: TraceAbstraction took 46998.25 ms. Allocated memory was 125.8 MB in the beginning and 790.6 MB in the end (delta: 664.8 MB). Free memory was 68.5 MB in the beginning and 331.7 MB in the end (delta: -263.1 MB). Peak memory consumption was 401.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:56,364 INFO L168 Benchmark]: Witness Printer took 180.92 ms. Allocated memory is still 790.6 MB. Free memory was 331.7 MB in the beginning and 312.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:18:56,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory is still 65.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 687.73 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 65.3 MB in the beginning and 100.2 MB in the end (delta: -34.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.46 ms. Allocated memory is still 125.8 MB. Free memory was 100.2 MB in the beginning and 90.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 124.43 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 84.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1590.68 ms. Allocated memory is still 125.8 MB. Free memory was 84.7 MB in the beginning and 68.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 46998.25 ms. Allocated memory was 125.8 MB in the beginning and 790.6 MB in the end (delta: 664.8 MB). Free memory was 68.5 MB in the beginning and 331.7 MB in the end (delta: -263.1 MB). Peak memory consumption was 401.3 MB. Max. memory is 16.1 GB. * Witness Printer took 180.92 ms. Allocated memory is still 790.6 MB. Free memory was 331.7 MB in the beginning and 312.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 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: 110]: 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, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46907.6ms, OverallIterations: 20, TraceHistogramMax: 10, EmptinessCheckTime: 224.4ms, AutomataDifference: 14540.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 488.5ms, InitialAbstractionConstructionTime: 17.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1902 SDtfs, 2501 SDslu, 117 SDs, 0 SdLazy, 10631 SolverSat, 1270 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10257.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5039 GetRequests, 4987 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 262.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5344occurred in iteration=16, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1663.1ms AutomataMinimizationTime, 20 MinimizatonAttempts, 4957 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 83 NumberOfFragments, 93 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6848 FormulaSimplificationTreeSizeReduction, 173.6ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 950 FormulaSimplificationTreeSizeReductionInter, 306.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 731.1ms SsaConstructionTime, 2167.9ms SatisfiabilityAnalysisTime, 19370.1ms InterpolantComputationTime, 15794 NumberOfCodeBlocks, 15794 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 15766 ConstructedInterpolants, 0 QuantifiedInterpolants, 50777 SizeOfPredicates, 0 NumberOfNonLiveVariables, 6448 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 28 InterpolantComputations, 19 PerfectInterpolantSequences, 34208/35492 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 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((7 <= a15 && a24 == 1) || ((a12 <= 11 && a24 == 1) && 0 < a12 + 43)) || (a21 <= 9 && a24 == 1)) || (a24 == 1 && a15 <= 5)) || ((a21 <= 7 && 49 + a12 <= 0) && a15 <= 5) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((7 <= a15 && a24 == 1) || ((a12 <= 11 && a24 == 1) && 0 < a12 + 43)) || (a21 <= 9 && a24 == 1)) || (a24 == 1 && a15 <= 5)) || ((a21 <= 7 && 49 + a12 <= 0) && a15 <= 5) RESULT: Ultimate proved your program to be correct! [2021-10-21 19:18:56,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7bf5be9-99ec-49c5-81ea-8d7858b4f93b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...