./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/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_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg --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-b2eff8b [2021-10-28 09:03:08,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:03:08,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:03:08,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:03:08,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:03:08,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:03:08,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:03:08,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:03:08,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:03:08,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:03:08,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:03:08,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:03:08,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:03:08,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:03:08,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:03:08,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:03:08,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:03:08,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:03:08,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:03:08,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:03:08,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:03:08,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:03:08,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:03:08,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:03:08,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:03:08,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:03:08,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:03:08,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:03:08,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:03:08,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:03:08,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:03:08,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:03:08,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:03:08,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:03:08,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:03:08,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:03:08,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:03:08,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:03:08,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:03:08,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:03:08,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:03:08,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:03:09,029 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:03:09,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:03:09,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:03:09,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:03:09,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:03:09,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:03:09,040 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:03:09,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:03:09,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:03:09,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:03:09,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:03:09,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:03:09,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:03:09,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:03:09,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:03:09,043 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:03:09,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:03:09,044 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:03:09,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:03:09,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:03:09,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:03:09,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:03:09,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:03:09,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:03:09,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:03:09,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:03:09,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:03:09,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:03:09,047 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:03:09,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:03:09,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:03:09,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:03:09,050 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_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deafb53b6c5560bead535ea0c1ac7bb85be5c959b9a13b21177e05987440264a [2021-10-28 09:03:09,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:03:09,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:03:09,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:03:09,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:03:09,403 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:03:09,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2021-10-28 09:03:09,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/data/94a16f93f/20444684dcdb4c368e12c1aa403c673d/FLAGf94971985 [2021-10-28 09:03:10,089 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:03:10,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2021-10-28 09:03:10,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/data/94a16f93f/20444684dcdb4c368e12c1aa403c673d/FLAGf94971985 [2021-10-28 09:03:10,436 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/data/94a16f93f/20444684dcdb4c368e12c1aa403c673d [2021-10-28 09:03:10,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:03:10,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:03:10,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:03:10,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:03:10,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:03:10,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:10,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9db93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10, skipping insertion in model container [2021-10-28 09:03:10,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:10,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:03:10,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:03:10,715 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_f4449f68-2d4f-4c74-b268-bd398de6f492/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c[524,537] [2021-10-28 09:03:10,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:03:10,781 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:03:10,807 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_f4449f68-2d4f-4c74-b268-bd398de6f492/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c[524,537] [2021-10-28 09:03:10,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:03:10,865 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:03:10,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10 WrapperNode [2021-10-28 09:03:10,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:03:10,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:03:10,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:03:10,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:03:10,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:10,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:10,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:03:10,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:03:10,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:03:10,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:03:10,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:10,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:10,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:10,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:10,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:10,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:11,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:11,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:03:11,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:03:11,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:03:11,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:03:11,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (1/1) ... [2021-10-28 09:03:11,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:03:11,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:11,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:11,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:03:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:03:11,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:03:11,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:03:11,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:03:11,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:03:11,373 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 09:03:11,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:03:11 BoogieIcfgContainer [2021-10-28 09:03:11,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:03:11,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:03:11,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:03:11,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:03:11,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:03:10" (1/3) ... [2021-10-28 09:03:11,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4506155e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:03:11, skipping insertion in model container [2021-10-28 09:03:11,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:10" (2/3) ... [2021-10-28 09:03:11,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4506155e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:03:11, skipping insertion in model container [2021-10-28 09:03:11,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:03:11" (3/3) ... [2021-10-28 09:03:11,387 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound2.c [2021-10-28 09:03:11,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:03:11,395 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 09:03:11,460 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:03:11,484 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 [2021-10-28 09:03:11,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:03:11,536 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) [2021-10-28 09:03:11,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:03:11,550 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:11,551 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:11,552 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:03:11,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:11,561 INFO L85 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-28 09:03:11,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:11,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484256895] [2021-10-28 09:03:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:11,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:11,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:11,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484256895] [2021-10-28 09:03:11,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484256895] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:11,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:11,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:03:11,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448239091] [2021-10-28 09:03:11,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:03:11,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:11,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:03:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:03:11,774 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) [2021-10-28 09:03:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:11,792 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2021-10-28 09:03:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:03:11,794 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 [2021-10-28 09:03:11,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:11,805 INFO L225 Difference]: With dead ends: 53 [2021-10-28 09:03:11,805 INFO L226 Difference]: Without dead ends: 24 [2021-10-28 09:03:11,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:03:11,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-28 09:03:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-28 09:03:11,846 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) [2021-10-28 09:03:11,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-28 09:03:11,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2021-10-28 09:03:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:11,850 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-28 09:03:11,850 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) [2021-10-28 09:03:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-28 09:03:11,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:03:11,851 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:11,852 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:11,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:03:11,852 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:03:11,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-28 09:03:11,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:11,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546489907] [2021-10-28 09:03:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:11,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:11,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:11,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711914445] [2021-10-28 09:03:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:11,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:11,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:11,920 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:11,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:03:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:12,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:03:12,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:12,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:12,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546489907] [2021-10-28 09:03:12,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:12,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711914445] [2021-10-28 09:03:12,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711914445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:12,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:12,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:03:12,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70887230] [2021-10-28 09:03:12,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:03:12,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:03:12,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:03:12,312 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) [2021-10-28 09:03:12,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:12,446 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-10-28 09:03:12,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:03:12,447 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 [2021-10-28 09:03:12,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:12,449 INFO L225 Difference]: With dead ends: 41 [2021-10-28 09:03:12,449 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 09:03:12,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:03:12,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 09:03:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2021-10-28 09:03:12,455 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) [2021-10-28 09:03:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-10-28 09:03:12,460 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2021-10-28 09:03:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:12,462 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-10-28 09:03:12,463 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) [2021-10-28 09:03:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-10-28 09:03:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:03:12,465 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:12,466 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:12,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:12,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-28 09:03:12,686 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:03:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash -937517175, now seen corresponding path program 1 times [2021-10-28 09:03:12,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:12,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774892835] [2021-10-28 09:03:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:12,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:12,725 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:12,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660071892] [2021-10-28 09:03:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:12,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:12,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:12,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:12,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:03:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:12,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:03:12,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:14,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:14,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774892835] [2021-10-28 09:03:14,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:14,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660071892] [2021-10-28 09:03:14,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660071892] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:14,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:14,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:03:14,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833650775] [2021-10-28 09:03:14,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:03:14,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:14,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:03:14,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:03:14,206 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) [2021-10-28 09:03:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:19,495 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2021-10-28 09:03:19,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:03:19,496 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 [2021-10-28 09:03:19,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:19,497 INFO L225 Difference]: With dead ends: 39 [2021-10-28 09:03:19,498 INFO L226 Difference]: Without dead ends: 37 [2021-10-28 09:03:19,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:03:19,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-28 09:03:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2021-10-28 09:03:19,504 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) [2021-10-28 09:03:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-28 09:03:19,505 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 14 [2021-10-28 09:03:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:19,506 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-28 09:03:19,506 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) [2021-10-28 09:03:19,506 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-10-28 09:03:19,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:03:19,507 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:19,507 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:19,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:19,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:19,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:03:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:19,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1003041614, now seen corresponding path program 1 times [2021-10-28 09:03:19,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:19,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339263544] [2021-10-28 09:03:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:19,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:19,762 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:19,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794155147] [2021-10-28 09:03:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:19,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:19,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:19,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:19,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:03:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:19,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-28 09:03:19,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:20,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:20,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339263544] [2021-10-28 09:03:20,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:20,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794155147] [2021-10-28 09:03:20,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794155147] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:20,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:20,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 09:03:20,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551619144] [2021-10-28 09:03:20,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:03:20,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:03:20,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:03:20,773 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) [2021-10-28 09:03:21,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:21,154 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2021-10-28 09:03:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:03:21,156 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 [2021-10-28 09:03:21,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:21,158 INFO L225 Difference]: With dead ends: 59 [2021-10-28 09:03:21,158 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 09:03:21,158 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:03:21,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 09:03:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2021-10-28 09:03:21,169 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) [2021-10-28 09:03:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-10-28 09:03:21,171 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2021-10-28 09:03:21,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:21,172 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-10-28 09:03:21,172 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) [2021-10-28 09:03:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-10-28 09:03:21,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:03:21,174 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:21,174 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:21,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:21,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:21,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:03:21,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:21,400 INFO L85 PathProgramCache]: Analyzing trace with hash 989284300, now seen corresponding path program 1 times [2021-10-28 09:03:21,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:21,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90694270] [2021-10-28 09:03:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:21,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:21,441 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:21,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158480292] [2021-10-28 09:03:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:21,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:21,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:21,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:21,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:03:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:21,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:03:21,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:21,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:21,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90694270] [2021-10-28 09:03:21,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:21,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158480292] [2021-10-28 09:03:21,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158480292] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:21,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:21,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:03:21,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105557171] [2021-10-28 09:03:21,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:03:21,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:03:21,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:03:21,755 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) [2021-10-28 09:03:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:21,931 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2021-10-28 09:03:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:03:21,932 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 [2021-10-28 09:03:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:21,933 INFO L225 Difference]: With dead ends: 52 [2021-10-28 09:03:21,933 INFO L226 Difference]: Without dead ends: 46 [2021-10-28 09:03:21,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:03:21,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-28 09:03:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-10-28 09:03:21,941 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) [2021-10-28 09:03:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-28 09:03:21,942 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 16 [2021-10-28 09:03:21,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:21,942 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-28 09:03:21,942 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) [2021-10-28 09:03:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-28 09:03:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:03:21,946 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:21,946 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:21,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:22,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:22,167 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:03:22,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:22,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1032048289, now seen corresponding path program 1 times [2021-10-28 09:03:22,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:22,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602509428] [2021-10-28 09:03:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:22,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:22,184 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:22,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004203454] [2021-10-28 09:03:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:22,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:22,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:22,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:22,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:03:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:22,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 09:03:22,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:23,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:23,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602509428] [2021-10-28 09:03:23,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:23,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004203454] [2021-10-28 09:03:23,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004203454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:23,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:23,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 09:03:23,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182948348] [2021-10-28 09:03:23,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:03:23,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:23,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:03:23,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:03:23,060 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) [2021-10-28 09:03:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:23,378 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2021-10-28 09:03:23,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:03:23,378 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 [2021-10-28 09:03:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:23,379 INFO L225 Difference]: With dead ends: 65 [2021-10-28 09:03:23,379 INFO L226 Difference]: Without dead ends: 37 [2021-10-28 09:03:23,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:03:23,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-28 09:03:23,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-10-28 09:03:23,386 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) [2021-10-28 09:03:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-28 09:03:23,387 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 16 [2021-10-28 09:03:23,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:23,388 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-28 09:03:23,388 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) [2021-10-28 09:03:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-28 09:03:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:03:23,389 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:23,389 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:23,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:23,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:23,590 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:03:23,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1931404169, now seen corresponding path program 1 times [2021-10-28 09:03:23,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:23,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615269468] [2021-10-28 09:03:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:23,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:23,624 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:23,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66033696] [2021-10-28 09:03:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:23,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:23,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:23,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:23,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:03:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:23,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 09:03:23,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:24,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:24,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615269468] [2021-10-28 09:03:24,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:24,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66033696] [2021-10-28 09:03:24,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66033696] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:24,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:24,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 09:03:24,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529187179] [2021-10-28 09:03:24,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:03:24,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:03:24,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:03:24,411 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) [2021-10-28 09:03:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:24,747 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2021-10-28 09:03:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:03:24,748 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 [2021-10-28 09:03:24,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:24,748 INFO L225 Difference]: With dead ends: 60 [2021-10-28 09:03:24,749 INFO L226 Difference]: Without dead ends: 37 [2021-10-28 09:03:24,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:03:24,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-28 09:03:24,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2021-10-28 09:03:24,755 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) [2021-10-28 09:03:24,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-10-28 09:03:24,755 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 17 [2021-10-28 09:03:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:24,756 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-10-28 09:03:24,756 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) [2021-10-28 09:03:24,756 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-10-28 09:03:24,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:03:24,757 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:24,757 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:24,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:24,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:24,975 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:03:24,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1931463751, now seen corresponding path program 1 times [2021-10-28 09:03:24,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:24,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373703022] [2021-10-28 09:03:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:24,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:25,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:25,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962294347] [2021-10-28 09:03:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:25,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:25,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:25,015 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:25,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:03:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:25,250 WARN L261 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-28 09:03:25,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:26,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:26,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373703022] [2021-10-28 09:03:26,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:26,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962294347] [2021-10-28 09:03:26,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962294347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:26,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:26,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-28 09:03:26,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697629093] [2021-10-28 09:03:26,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:03:26,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:26,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:03:26,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:03:26,246 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) [2021-10-28 09:03:27,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:27,125 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-10-28 09:03:27,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:03:27,126 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 [2021-10-28 09:03:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:27,127 INFO L225 Difference]: With dead ends: 59 [2021-10-28 09:03:27,127 INFO L226 Difference]: Without dead ends: 34 [2021-10-28 09:03:27,127 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=194, Invalid=406, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:03:27,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-28 09:03:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-28 09:03:27,134 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) [2021-10-28 09:03:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-10-28 09:03:27,135 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 17 [2021-10-28 09:03:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:27,135 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-10-28 09:03:27,135 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) [2021-10-28 09:03:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-10-28 09:03:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:03:27,136 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:27,136 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:27,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:27,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:27,363 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:03:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:27,364 INFO L85 PathProgramCache]: Analyzing trace with hash -245556932, now seen corresponding path program 1 times [2021-10-28 09:03:27,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:27,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46037507] [2021-10-28 09:03:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:27,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:27,379 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:03:27,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458670854] [2021-10-28 09:03:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:27,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:27,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:27,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:27,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:03:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:27,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-28 09:03:27,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:30,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:30,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46037507] [2021-10-28 09:03:30,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:03:30,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458670854] [2021-10-28 09:03:30,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458670854] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:30,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:30,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 09:03:30,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243977345] [2021-10-28 09:03:30,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:03:30,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:30,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:03:30,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:03:30,309 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) [2021-10-28 09:03:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:31,794 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-10-28 09:03:31,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:03:31,795 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 [2021-10-28 09:03:31,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:31,795 INFO L225 Difference]: With dead ends: 41 [2021-10-28 09:03:31,795 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:03:31,796 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:03:31,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:03:31,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:03:31,796 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) [2021-10-28 09:03:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:03:31,797 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-28 09:03:31,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:31,797 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:03:31,797 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) [2021-10-28 09:03:31,797 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:03:31,797 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:03:31,800 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:03:31,801 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:03:31,801 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:03:31,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:32,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:32,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:03:32,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:03:32,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:03:32,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:03:32,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:03:32,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:03:35,788 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:03:35,788 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2021-10-28 09:03:35,789 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 54) no Hoare annotation was computed. [2021-10-28 09:03:35,789 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:03:35,791 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:03:35,791 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:03:35,791 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:03:35,791 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:03:35,792 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)))) [2021-10-28 09:03:35,792 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:03:35,792 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-28 09:03:35,793 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-10-28 09:03:35,793 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))))) [2021-10-28 09:03:35,793 INFO L857 garLoopResultBuilder]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2021-10-28 09:03:35,793 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:03:35,794 INFO L860 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: true [2021-10-28 09:03:35,794 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:03:35,794 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:03:35,794 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:03:35,794 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:03:35,795 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-28 09:03:35,795 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-10-28 09:03:35,795 INFO L857 garLoopResultBuilder]: For program point L9-4(line 9) no Hoare annotation was computed. [2021-10-28 09:03:35,795 INFO L857 garLoopResultBuilder]: For program point L34-2(lines 34 55) no Hoare annotation was computed. [2021-10-28 09:03:35,795 INFO L860 garLoopResultBuilder]: At program point L59(lines 19 60) the Hoare annotation is: true [2021-10-28 09:03:35,796 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:03:35,796 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 54) no Hoare annotation was computed. [2021-10-28 09:03:35,796 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)))) [2021-10-28 09:03:35,800 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:35,802 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:03:35,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:03:35 BoogieIcfgContainer [2021-10-28 09:03:35,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:03:35,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:03:35,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:03:35,845 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:03:35,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:03:11" (3/4) ... [2021-10-28 09:03:35,850 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:03:35,863 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 09:03:35,864 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:03:35,864 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:03:35,865 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:03:35,923 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:03:35,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:03:35,925 INFO L168 Benchmark]: Toolchain (without parser) took 25483.25 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 77.2 MB in the beginning and 87.6 MB in the end (delta: -10.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:35,926 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 107.0 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:03:35,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.77 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 76.9 MB in the beginning and 103.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:35,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.61 ms. Allocated memory is still 130.0 MB. Free memory was 103.9 MB in the beginning and 102.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:03:35,928 INFO L168 Benchmark]: Boogie Preprocessor took 56.68 ms. Allocated memory is still 130.0 MB. Free memory was 102.3 MB in the beginning and 101.4 MB in the end (delta: 863.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:35,928 INFO L168 Benchmark]: RCFGBuilder took 363.21 ms. Allocated memory is still 130.0 MB. Free memory was 101.0 MB in the beginning and 90.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:35,929 INFO L168 Benchmark]: TraceAbstraction took 24466.07 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 89.7 MB in the beginning and 90.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 81.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:35,929 INFO L168 Benchmark]: Witness Printer took 78.87 ms. Allocated memory is still 157.3 MB. Free memory was 90.7 MB in the beginning and 87.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:35,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 107.0 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 421.77 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 76.9 MB in the beginning and 103.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.61 ms. Allocated memory is still 130.0 MB. Free memory was 103.9 MB in the beginning and 102.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.68 ms. Allocated memory is still 130.0 MB. Free memory was 102.3 MB in the beginning and 101.4 MB in the end (delta: 863.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 363.21 ms. Allocated memory is still 130.0 MB. Free memory was 101.0 MB in the beginning and 90.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24466.07 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 89.7 MB in the beginning and 90.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 81.8 MB. Max. memory is 16.1 GB. * Witness Printer took 78.87 ms. Allocated memory is still 157.3 MB. Free memory was 90.7 MB in the beginning and 87.6 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: 24.3s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 119 SDtfs, 543 SDslu, 337 SDs, 0 SdLazy, 809 SolverSat, 168 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 5.7s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 38 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 23 NumberOfFragments, 789 HoareAnnotationTreeSize, 5 FomulaSimplifications, 1820 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 331 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.7s 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! [2021-10-28 09:03:35,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4449f68-2d4f-4c74-b268-bd398de6f492/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...