./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.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_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/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_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/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_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/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 deafb53b6c5560bead535ea0c1ac7bb85be5c959b9a13b21177e05987440264a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:26:04,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:26:04,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:26:04,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:26:04,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:26:04,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:26:04,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:26:04,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:26:04,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:26:04,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:26:04,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:26:04,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:26:04,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:26:04,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:26:04,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:26:04,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:26:04,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:26:04,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:26:04,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:26:04,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:26:04,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:26:04,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:26:04,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:26:04,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:26:04,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:26:04,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:26:04,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:26:04,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:26:04,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:26:04,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:26:04,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:26:04,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:26:04,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:26:04,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:26:04,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:26:04,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:26:04,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:26:04,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:26:04,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:26:04,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:26:04,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:26:04,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:26:04,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:26:04,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:26:04,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:26:04,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:26:04,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:26:04,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:26:04,900 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:26:04,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:26:04,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:26:04,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:26:04,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:26:04,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:26:04,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:26:04,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:26:04,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:26:04,902 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:26:04,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:26:04,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:26:04,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:26:04,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:26:04,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:26:04,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:26:04,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:26:04,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:26:04,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:26:04,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:26:04,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:26:04,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:26:04,905 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:26:04,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:26:04,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:26:04,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:26:04,906 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_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deafb53b6c5560bead535ea0c1ac7bb85be5c959b9a13b21177e05987440264a [2021-10-21 20:26:05,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:26:05,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:26:05,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:26:05,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:26:05,221 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:26:05,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2021-10-21 20:26:05,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/data/0bcfd7191/871f3940183048d2a707e3c773ead4a2/FLAG91ba7e8bf [2021-10-21 20:26:05,791 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:26:05,792 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2021-10-21 20:26:05,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/data/0bcfd7191/871f3940183048d2a707e3c773ead4a2/FLAG91ba7e8bf [2021-10-21 20:26:06,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/data/0bcfd7191/871f3940183048d2a707e3c773ead4a2 [2021-10-21 20:26:06,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:26:06,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:26:06,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:26:06,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:26:06,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:26:06,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ae9560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06, skipping insertion in model container [2021-10-21 20:26:06,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:26:06,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:26:06,372 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_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c[524,537] [2021-10-21 20:26:06,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:26:06,403 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:26:06,414 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_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c[524,537] [2021-10-21 20:26:06,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:26:06,439 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:26:06,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06 WrapperNode [2021-10-21 20:26:06,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:26:06,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:26:06,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:26:06,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:26:06,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:26:06,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:26:06,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:26:06,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:26:06,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:26:06,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:26:06,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:26:06,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:26:06,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (1/1) ... [2021-10-21 20:26:06,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:26:06,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:06,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:26:06,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:26:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:26:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:26:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:26:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:26:06,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:26:06,858 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-21 20:26:06,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:26:06 BoogieIcfgContainer [2021-10-21 20:26:06,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:26:06,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:26:06,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:26:06,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:26:06,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:26:06" (1/3) ... [2021-10-21 20:26:06,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd9ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:26:06, skipping insertion in model container [2021-10-21 20:26:06,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:06" (2/3) ... [2021-10-21 20:26:06,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd9ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:26:06, skipping insertion in model container [2021-10-21 20:26:06,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:26:06" (3/3) ... [2021-10-21 20:26:06,871 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound2.c [2021-10-21 20:26:06,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:26:06,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-21 20:26:06,933 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:26:06,941 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 20:26:06,941 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 20:26:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 24 states have (on average 1.625) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:06,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:26:06,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:06,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:06,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:06,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:06,971 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-21 20:26:06,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:06,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061612866] [2021-10-21 20:26:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:06,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:07,179 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 20:26:07,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:07,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061612866] [2021-10-21 20:26:07,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061612866] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:07,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:07,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:26:07,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694046453] [2021-10-21 20:26:07,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:26:07,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:07,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:26:07,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:26:07,207 INFO L87 Difference]: Start difference. First operand has 28 states, 24 states have (on average 1.625) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:07,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:07,228 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2021-10-21 20:26:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:26:07,230 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-21 20:26:07,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:07,241 INFO L225 Difference]: With dead ends: 53 [2021-10-21 20:26:07,242 INFO L226 Difference]: Without dead ends: 24 [2021-10-21 20:26:07,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:26:07,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-21 20:26:07,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-21 20:26:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 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 20:26:07,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-21 20:26:07,279 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2021-10-21 20:26:07,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:07,279 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-21 20:26:07,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-21 20:26:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:26:07,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:07,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:07,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:26:07,282 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:07,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-21 20:26:07,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:07,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497006949] [2021-10-21 20:26:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:07,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:07,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:26:07,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70632980] [2021-10-21 20:26:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:07,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:07,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:07,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:07,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:26:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:07,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:26:07,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:07,750 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 20:26:07,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:07,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497006949] [2021-10-21 20:26:07,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:26:07,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70632980] [2021-10-21 20:26:07,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70632980] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:07,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:07,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:26:07,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417325633] [2021-10-21 20:26:07,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:26:07,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:26:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:26:07,765 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:07,884 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-10-21 20:26:07,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:26:07,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-21 20:26:07,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:07,888 INFO L225 Difference]: With dead ends: 41 [2021-10-21 20:26:07,889 INFO L226 Difference]: Without dead ends: 39 [2021-10-21 20:26:07,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:26:07,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-21 20:26:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2021-10-21 20:26:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-10-21 20:26:07,901 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2021-10-21 20:26:07,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:07,902 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-10-21 20:26:07,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:07,902 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-10-21 20:26:07,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 20:26:07,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:07,904 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:07,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:26:08,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:08,118 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:08,125 INFO L82 PathProgramCache]: Analyzing trace with hash -937517175, now seen corresponding path program 1 times [2021-10-21 20:26:08,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:08,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090063551] [2021-10-21 20:26:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:08,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:08,157 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:26:08,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585903275] [2021-10-21 20:26:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:08,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:08,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:08,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:08,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:26:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:08,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:26:08,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:09,374 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 20:26:09,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:09,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090063551] [2021-10-21 20:26:09,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:26:09,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585903275] [2021-10-21 20:26:09,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585903275] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:09,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:09,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-21 20:26:09,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770224728] [2021-10-21 20:26:09,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:26:09,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:09,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:26:09,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:26:09,386 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:15,784 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2021-10-21 20:26:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:26:15,785 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-21 20:26:15,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:15,786 INFO L225 Difference]: With dead ends: 39 [2021-10-21 20:26:15,786 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 20:26:15,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1985.4ms TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2021-10-21 20:26:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 20:26:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2021-10-21 20:26:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-21 20:26:15,793 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 14 [2021-10-21 20:26:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:15,793 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-21 20:26:15,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-10-21 20:26:15,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:26:15,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:15,795 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:15,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-21 20:26:16,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:16,013 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:16,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1003041614, now seen corresponding path program 1 times [2021-10-21 20:26:16,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:16,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79993104] [2021-10-21 20:26:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:16,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:16,042 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:26:16,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349412578] [2021-10-21 20:26:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:16,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:16,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:16,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:16,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:26:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:16,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-21 20:26:16,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:16,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:16,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79993104] [2021-10-21 20:26:16,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:26:16,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349412578] [2021-10-21 20:26:16,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349412578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:26:16,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:26:16,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 20:26:16,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288183145] [2021-10-21 20:26:16,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:26:16,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:26:16,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:26:16,893 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:17,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:17,251 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2021-10-21 20:26:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:26:17,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-21 20:26:17,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:17,254 INFO L225 Difference]: With dead ends: 59 [2021-10-21 20:26:17,254 INFO L226 Difference]: Without dead ends: 43 [2021-10-21 20:26:17,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 307.6ms TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:26:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-21 20:26:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2021-10-21 20:26:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-10-21 20:26:17,263 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2021-10-21 20:26:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:17,264 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-10-21 20:26:17,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-10-21 20:26:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 20:26:17,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:17,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:17,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:26:17,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:17,466 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:17,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash 989284300, now seen corresponding path program 1 times [2021-10-21 20:26:17,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:17,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300967232] [2021-10-21 20:26:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:17,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:17,487 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:26:17,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462483855] [2021-10-21 20:26:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:17,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:17,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:17,489 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:17,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:26:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:17,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:26:17,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:17,748 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 20:26:17,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:17,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300967232] [2021-10-21 20:26:17,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:26:17,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462483855] [2021-10-21 20:26:17,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462483855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:17,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:17,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:26:17,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40551175] [2021-10-21 20:26:17,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:26:17,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:26:17,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:26:17,765 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 20:26:17,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:17,932 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2021-10-21 20:26:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:26:17,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-10-21 20:26:17,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:17,933 INFO L225 Difference]: With dead ends: 52 [2021-10-21 20:26:17,933 INFO L226 Difference]: Without dead ends: 46 [2021-10-21 20:26:17,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:26:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-21 20:26:17,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-10-21 20:26:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 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 20:26:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-21 20:26:17,940 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 16 [2021-10-21 20:26:17,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:17,941 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-21 20:26:17,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 20:26:17,941 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-21 20:26:17,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 20:26:17,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:17,943 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:17,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:26:18,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:18,170 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:18,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1032048289, now seen corresponding path program 1 times [2021-10-21 20:26:18,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:18,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055064581] [2021-10-21 20:26:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:18,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:18,211 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:26:18,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272079344] [2021-10-21 20:26:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:18,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:18,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:18,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:18,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:26:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:18,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-21 20:26:18,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:19,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:19,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055064581] [2021-10-21 20:26:19,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:26:19,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272079344] [2021-10-21 20:26:19,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272079344] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:26:19,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:26:19,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 20:26:19,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204917545] [2021-10-21 20:26:19,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:26:19,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:26:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:26:19,003 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 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 20:26:19,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:19,294 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2021-10-21 20:26:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:26:19,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-10-21 20:26:19,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:19,295 INFO L225 Difference]: With dead ends: 65 [2021-10-21 20:26:19,295 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 20:26:19,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 284.1ms TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:26:19,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 20:26:19,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-10-21 20:26:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.21875) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-21 20:26:19,304 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 16 [2021-10-21 20:26:19,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:19,305 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-21 20:26:19,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 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 20:26:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-21 20:26:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:26:19,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:19,307 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:19,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:26:19,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:19,509 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:19,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1931404169, now seen corresponding path program 1 times [2021-10-21 20:26:19,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:19,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058409268] [2021-10-21 20:26:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:19,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:19,527 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:26:19,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323726532] [2021-10-21 20:26:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:19,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:19,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:19,529 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:19,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:26:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:19,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 20:26:19,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:20,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:20,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058409268] [2021-10-21 20:26:20,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:26:20,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323726532] [2021-10-21 20:26:20,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323726532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:26:20,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:26:20,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 20:26:20,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39867196] [2021-10-21 20:26:20,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:26:20,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:20,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:26:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:26:20,341 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 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 20:26:20,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:20,664 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2021-10-21 20:26:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:26:20,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-21 20:26:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:20,665 INFO L225 Difference]: With dead ends: 60 [2021-10-21 20:26:20,665 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 20:26:20,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 279.4ms TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:26:20,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 20:26:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2021-10-21 20:26:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-10-21 20:26:20,671 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 17 [2021-10-21 20:26:20,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:20,671 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-10-21 20:26:20,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 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 20:26:20,672 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-10-21 20:26:20,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:26:20,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:20,672 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:20,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:26:20,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:20,890 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:20,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1931463751, now seen corresponding path program 1 times [2021-10-21 20:26:20,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:20,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461860978] [2021-10-21 20:26:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:20,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:20,912 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:26:20,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330491740] [2021-10-21 20:26:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:20,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:20,924 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:20,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:26:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:21,125 WARN L261 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-21 20:26:21,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:22,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:22,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461860978] [2021-10-21 20:26:22,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:26:22,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330491740] [2021-10-21 20:26:22,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330491740] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:26:22,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:26:22,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-21 20:26:22,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685384076] [2021-10-21 20:26:22,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:26:22,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:26:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:26:22,060 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 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 20:26:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:22,868 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-10-21 20:26:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 20:26:22,869 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-21 20:26:22,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:22,869 INFO L225 Difference]: With dead ends: 59 [2021-10-21 20:26:22,869 INFO L226 Difference]: Without dead ends: 34 [2021-10-21 20:26:22,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 823.2ms TimeCoverageRelationStatistics Valid=194, Invalid=406, Unknown=0, NotChecked=0, Total=600 [2021-10-21 20:26:22,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-21 20:26:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-21 20:26:22,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-10-21 20:26:22,876 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 17 [2021-10-21 20:26:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:22,876 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-10-21 20:26:22,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 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 20:26:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-10-21 20:26:22,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:26:22,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:22,877 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:22,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:26:23,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-21 20:26:23,094 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:23,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:23,095 INFO L82 PathProgramCache]: Analyzing trace with hash -245556932, now seen corresponding path program 1 times [2021-10-21 20:26:23,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:23,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146969268] [2021-10-21 20:26:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:23,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:23,117 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:26:23,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773841297] [2021-10-21 20:26:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:23,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:23,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:23,123 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:23,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:26:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:23,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-21 20:26:23,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:25,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:25,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146969268] [2021-10-21 20:26:25,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:26:25,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773841297] [2021-10-21 20:26:25,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773841297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:26:25,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:26:25,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-21 20:26:25,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197752140] [2021-10-21 20:26:25,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:26:25,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:25,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:26:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:26:25,723 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 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 20:26:26,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:26,930 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-10-21 20:26:26,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:26:26,930 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-10-21 20:26:26,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:26,931 INFO L225 Difference]: With dead ends: 41 [2021-10-21 20:26:26,931 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:26:26,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1241.4ms TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:26:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:26:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:26:26,932 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 20:26:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:26:26,932 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-21 20:26:26,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:26,932 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:26:26,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 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 20:26:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:26:26,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:26:26,935 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:26:26,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:26:26,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:26:26,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-21 20:26:27,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:27,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:26:27,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:26:27,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:26:27,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:26:27,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:26:27,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:26:32,568 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 20:26:32,568 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2021-10-21 20:26:32,569 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 54) no Hoare annotation was computed. [2021-10-21 20:26:32,569 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:26:32,569 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:26:32,569 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:26:32,569 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 20:26:32,569 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-21 20:26:32,570 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 37 38) the Hoare annotation is: (let ((.cse12 (+ ULTIMATE.start_main_~a~0 1)) (.cse20 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0)) (.cse5 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)) (.cse15 (+ ULTIMATE.start_main_~b~0 1))) (let ((.cse16 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (.cse14 (div ULTIMATE.start_main_~y~0 2)) (.cse11 (div ULTIMATE.start_main_~x~0 2)) (.cse18 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse21 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (<= 1 ULTIMATE.start_main_~b~0)) (.cse22 (= ULTIMATE.start_main_~q~0 0)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse17 (= ULTIMATE.start_main_~y~0 .cse15)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~y~0 2)) (.cse10 (= ULTIMATE.start_main_~q~0 (+ ULTIMATE.start_main_~p~0 .cse20 .cse5))) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (<= ULTIMATE.start_main_~x~0 2)) (.cse13 (<= 1 ULTIMATE.start_main_~y~0)) (.cse19 (mod .cse15 2)) (.cse7 (<= 0 ULTIMATE.start_main_~x~0)) (.cse8 (= ULTIMATE.start_main_~x~0 .cse12))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 .cse5) (<= 1 (mod ULTIMATE.start_main_~x~0 2)) .cse6 (= (mod ULTIMATE.start_main_~b~0 2) 0) .cse7 .cse8 .cse9) (and .cse0 .cse1 .cse2 .cse10 (= (mod (* ULTIMATE.start_main_~p~0 3) (- 4)) 0) .cse4 (= .cse11 .cse12) .cse13 (= .cse14 .cse15) (<= (mod ULTIMATE.start_main_~y~0 2) 0) (= .cse16 (+ (* .cse14 ULTIMATE.start_main_~p~0) (* .cse14 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0))) .cse7) (and .cse17 .cse0 .cse18 (<= 1 .cse19) .cse1 .cse2 (= ULTIMATE.start_main_~q~0 .cse20) .cse3 .cse4 (<= 0 .cse15) (not (= ULTIMATE.start_main_~a~0 0)) .cse7) (and .cse0 .cse2 (= .cse16 (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0))) .cse4 .cse21 (= ULTIMATE.start_main_~b~0 .cse14) .cse6 .cse22 (not (= ULTIMATE.start_main_~x~0 0)) .cse7 (= ULTIMATE.start_main_~a~0 .cse11)) (and .cse0 .cse18 .cse2 .cse3 .cse4 .cse21 .cse6 .cse22 .cse7 .cse9) (and .cse17 .cse0 .cse1 .cse2 .cse10 .cse3 .cse4 .cse13 (not (= (mod .cse12 2) 0)) (not (= .cse19 0)) .cse7 .cse8)))) [2021-10-21 20:26:32,570 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-21 20:26:32,570 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-21 20:26:32,570 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-10-21 20:26:32,571 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse12 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0)) (.cse10 (+ ULTIMATE.start_main_~b~0 1))) (let ((.cse0 (= ULTIMATE.start_main_~a~0 0)) (.cse11 (= ULTIMATE.start_main_~y~0 .cse10)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~y~0 2)) (.cse7 (= ULTIMATE.start_main_~q~0 (+ ULTIMATE.start_main_~p~0 .cse12 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)))) (.cse13 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (<= ULTIMATE.start_main_~x~0 2)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse5 (<= 0 ULTIMATE.start_main_~x~0)) (.cse8 (+ ULTIMATE.start_main_~a~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~b~0) .cse5) (let ((.cse9 (div ULTIMATE.start_main_~y~0 2))) (and .cse1 .cse6 .cse2 .cse7 (= (mod (* ULTIMATE.start_main_~p~0 3) (- 4)) 0) .cse3 (= (div ULTIMATE.start_main_~x~0 2) .cse8) .cse4 (= .cse9 .cse10) (<= (mod ULTIMATE.start_main_~y~0 2) 0) (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ (* .cse9 ULTIMATE.start_main_~p~0) (* .cse9 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0))) .cse5)) (and .cse11 .cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 (mod .cse10 2)) .cse6 .cse2 (= ULTIMATE.start_main_~q~0 .cse12) .cse13 .cse3 (<= 0 .cse10) (not .cse0) .cse5) (and .cse11 .cse1 .cse6 .cse2 .cse7 .cse13 .cse3 .cse4 (not (= (mod .cse8 2) 0)) .cse5 (= ULTIMATE.start_main_~x~0 .cse8))))) [2021-10-21 20:26:32,571 INFO L857 garLoopResultBuilder]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2021-10-21 20:26:32,571 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-21 20:26:32,571 INFO L860 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: true [2021-10-21 20:26:32,571 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:26:32,572 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-21 20:26:32,572 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-21 20:26:32,572 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-21 20:26:32,572 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-21 20:26:32,572 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-10-21 20:26:32,573 INFO L857 garLoopResultBuilder]: For program point L9-4(line 9) no Hoare annotation was computed. [2021-10-21 20:26:32,573 INFO L857 garLoopResultBuilder]: For program point L34-2(lines 34 55) no Hoare annotation was computed. [2021-10-21 20:26:32,573 INFO L860 garLoopResultBuilder]: At program point L59(lines 19 60) the Hoare annotation is: true [2021-10-21 20:26:32,573 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 20:26:32,573 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 54) no Hoare annotation was computed. [2021-10-21 20:26:32,574 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 34 55) the Hoare annotation is: (let ((.cse13 (+ ULTIMATE.start_main_~a~0 1)) (.cse21 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0)) (.cse5 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)) (.cse16 (+ ULTIMATE.start_main_~b~0 1))) (let ((.cse6 (mod ULTIMATE.start_main_~x~0 2)) (.cse15 (div ULTIMATE.start_main_~y~0 2)) (.cse12 (div ULTIMATE.start_main_~x~0 2)) (.cse19 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse7 (<= 1 ULTIMATE.start_main_~b~0)) (.cse17 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse18 (= ULTIMATE.start_main_~y~0 .cse16)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~y~0 2)) (.cse11 (= ULTIMATE.start_main_~q~0 (+ ULTIMATE.start_main_~p~0 .cse21 .cse5))) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (<= ULTIMATE.start_main_~x~0 2)) (.cse14 (<= 1 ULTIMATE.start_main_~y~0)) (.cse20 (mod .cse16 2)) (.cse8 (<= 0 ULTIMATE.start_main_~x~0)) (.cse9 (= ULTIMATE.start_main_~x~0 .cse13))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 .cse5) (<= 1 .cse6) .cse7 (= (mod ULTIMATE.start_main_~b~0 2) 0) .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse2 .cse11 (= (mod (* ULTIMATE.start_main_~p~0 3) (- 4)) 0) .cse4 (= .cse12 .cse13) .cse14 (= .cse15 .cse16) (<= (mod ULTIMATE.start_main_~y~0 2) 0) (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ (* .cse15 ULTIMATE.start_main_~p~0) (* .cse15 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0))) .cse8) (and .cse0 (= ULTIMATE.start_main_~p~0 4) .cse1 .cse2 .cse4 (<= .cse6 0) (= ULTIMATE.start_main_~b~0 .cse15) .cse7 .cse17 (not (= ULTIMATE.start_main_~x~0 0)) .cse8 (= ULTIMATE.start_main_~a~0 .cse12)) (and .cse18 .cse0 .cse19 (<= 1 .cse20) .cse1 .cse2 (= ULTIMATE.start_main_~q~0 .cse21) .cse3 .cse4 (<= 0 .cse16) (not (= ULTIMATE.start_main_~a~0 0)) .cse8) (and .cse0 .cse19 .cse2 .cse3 .cse4 .cse7 .cse17 .cse8 .cse10) (and .cse18 .cse0 .cse1 .cse2 .cse11 .cse3 .cse4 .cse14 (not (= (mod .cse13 2) 0)) (not (= .cse20 0)) .cse8 .cse9)))) [2021-10-21 20:26:32,579 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:26:32,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:26:32 BoogieIcfgContainer [2021-10-21 20:26:32,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:26:32,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:26:32,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:26:32,611 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:26:32,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:26:06" (3/4) ... [2021-10-21 20:26:32,615 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:26:32,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-21 20:26:32,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:26:32,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:26:32,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:26:32,674 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:26:32,674 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:26:32,676 INFO L168 Benchmark]: Toolchain (without parser) took 26500.53 ms. Allocated memory was 125.8 MB in the beginning and 192.9 MB in the end (delta: 67.1 MB). Free memory was 97.3 MB in the beginning and 96.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 67.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:32,677 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 125.8 MB. Free memory is still 79.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:32,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.36 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 97.3 MB in the beginning and 132.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:32,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.77 ms. Allocated memory is still 159.4 MB. Free memory was 132.1 MB in the beginning and 130.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:32,678 INFO L168 Benchmark]: Boogie Preprocessor took 28.50 ms. Allocated memory is still 159.4 MB. Free memory was 130.8 MB in the beginning and 129.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:32,679 INFO L168 Benchmark]: RCFGBuilder took 344.40 ms. Allocated memory is still 159.4 MB. Free memory was 129.5 MB in the beginning and 117.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:32,679 INFO L168 Benchmark]: TraceAbstraction took 25746.91 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 117.4 MB in the beginning and 99.2 MB in the end (delta: 18.2 MB). Peak memory consumption was 99.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:32,680 INFO L168 Benchmark]: Witness Printer took 64.30 ms. Allocated memory is still 192.9 MB. Free memory was 99.2 MB in the beginning and 96.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:32,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 125.8 MB. Free memory is still 79.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.36 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 97.3 MB in the beginning and 132.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.77 ms. Allocated memory is still 159.4 MB. Free memory was 132.1 MB in the beginning and 130.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.50 ms. Allocated memory is still 159.4 MB. Free memory was 130.8 MB in the beginning and 129.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 344.40 ms. Allocated memory is still 159.4 MB. Free memory was 129.5 MB in the beginning and 117.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25746.91 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 117.4 MB in the beginning and 99.2 MB in the end (delta: 18.2 MB). Peak memory consumption was 99.4 MB. Max. memory is 16.1 GB. * Witness Printer took 64.30 ms. Allocated memory is still 192.9 MB. Free memory was 99.2 MB in the beginning and 96.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 25648.3ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 17.4ms, AutomataDifference: 9773.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5425.5ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 119 SDtfs, 543 SDslu, 337 SDs, 0 SdLazy, 808 SolverSat, 168 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6219.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 5065.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 68.3ms AutomataMinimizationTime, 9 MinimizatonAttempts, 38 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 23 NumberOfFragments, 789 HoareAnnotationTreeSize, 5 FomulaSimplifications, 1820 FormulaSimplificationTreeSizeReduction, 210.2ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 331 FormulaSimplificationTreeSizeReductionInter, 5208.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 95.2ms SsaConstructionTime, 198.8ms SatisfiabilityAnalysisTime, 6949.2ms InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 129 ConstructedInterpolants, 1 QuantifiedInterpolants, 2173 SizeOfPredicates, 91 NumberOfNonLiveVariables, 668 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 0/16 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 3 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && 1 <= cond) && y <= 2) && p == 1) && x <= 2) && q == p * b) && 1 <= x % 2) && 1 <= b) && b % 2 == 0) && 0 <= x) && x == a + 1) && b == y) || (((((((((((cond == 1 && 1 <= cond) && y <= 2) && q == p + a * p + p * b) && p * 3 % -4 == 0) && x <= 2) && x / 2 == a + 1) && 1 <= y) && y / 2 == b + 1) && y % 2 <= 0) && x * y == y / 2 * p + y / 2 * a * p) && 0 <= x)) || (((((((((((y == b + 1 && cond == 1) && a == x) && 1 <= (b + 1) % 2) && 1 <= cond) && y <= 2) && q == a * p) && p == 1) && x <= 2) && 0 <= b + 1) && !(a == 0)) && 0 <= x)) || ((((((((((cond == 1 && y <= 2) && x * y == q + a * p * b) && x <= 2) && 1 == cond) && b == y / 2) && 1 <= b) && q == 0) && !(x == 0)) && 0 <= x) && a == x / 2)) || (((((((((cond == 1 && a == x) && y <= 2) && p == 1) && x <= 2) && 1 == cond) && 1 <= b) && q == 0) && 0 <= x) && b == y)) || (((((((((((y == b + 1 && cond == 1) && 1 <= cond) && y <= 2) && q == p + a * p + p * b) && p == 1) && x <= 2) && 1 <= y) && !((a + 1) % 2 == 0)) && !((b + 1) % 2 == 0)) && 0 <= x) && x == a + 1) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && 1 <= cond) && y <= 2) && p == 1) && x <= 2) && q == p * b) && 1 <= x % 2) && 1 <= b) && b % 2 == 0) && 0 <= x) && x == a + 1) && b == y) || (((((((((((cond == 1 && 1 <= cond) && y <= 2) && q == p + a * p + p * b) && p * 3 % -4 == 0) && x <= 2) && x / 2 == a + 1) && 1 <= y) && y / 2 == b + 1) && y % 2 <= 0) && x * y == y / 2 * p + y / 2 * a * p) && 0 <= x)) || (((((((((((cond == 1 && p == 4) && 1 <= cond) && y <= 2) && x <= 2) && x % 2 <= 0) && b == y / 2) && 1 <= b) && q == 0) && !(x == 0)) && 0 <= x) && a == x / 2)) || (((((((((((y == b + 1 && cond == 1) && a == x) && 1 <= (b + 1) % 2) && 1 <= cond) && y <= 2) && q == a * p) && p == 1) && x <= 2) && 0 <= b + 1) && !(a == 0)) && 0 <= x)) || ((((((((cond == 1 && a == x) && y <= 2) && p == 1) && x <= 2) && 1 <= b) && q == 0) && 0 <= x) && b == y)) || (((((((((((y == b + 1 && cond == 1) && 1 <= cond) && y <= 2) && q == p + a * p + p * b) && p == 1) && x <= 2) && 1 <= y) && !((a + 1) % 2 == 0)) && !((b + 1) % 2 == 0)) && 0 <= x) && x == a + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((((a == 0 && cond == 1) && y <= 2) && x <= 2) && 1 <= y) && 1 <= b) && 0 <= x) || (((((((((((cond == 1 && 1 <= cond) && y <= 2) && q == p + a * p + p * b) && p * 3 % -4 == 0) && x <= 2) && x / 2 == a + 1) && 1 <= y) && y / 2 == b + 1) && y % 2 <= 0) && x * y == y / 2 * p + y / 2 * a * p) && 0 <= x)) || (((((((((((y == b + 1 && cond == 1) && a == x) && 1 <= (b + 1) % 2) && 1 <= cond) && y <= 2) && q == a * p) && p == 1) && x <= 2) && 0 <= b + 1) && !(a == 0)) && 0 <= x)) || ((((((((((y == b + 1 && cond == 1) && 1 <= cond) && y <= 2) && q == p + a * p + p * b) && p == 1) && x <= 2) && 1 <= y) && !((a + 1) % 2 == 0)) && 0 <= x) && x == a + 1) RESULT: Ultimate proved your program to be correct! [2021-10-21 20:26:32,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea83eba-83b0-4b89-b33d-b4f7f3a3ece0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...