./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0 --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 bdb7543d1c240ce49edc036e26416805e34b577c5ba56fd044d3b26828ca42a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:16:10,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:16:10,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:16:10,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:16:10,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:16:10,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:16:10,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:16:10,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:16:10,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:16:10,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:16:10,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:16:10,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:16:10,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:16:10,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:16:10,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:16:10,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:16:10,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:16:10,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:16:10,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:16:10,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:16:10,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:16:10,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:16:10,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:16:10,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:16:10,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:16:10,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:16:10,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:16:10,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:16:10,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:16:10,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:16:10,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:16:10,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:16:10,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:16:10,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:16:10,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:16:10,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:16:10,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:16:10,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:16:10,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:16:10,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:16:10,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:16:10,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:16:10,355 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:16:10,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:16:10,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:16:10,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:16:10,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:16:10,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:16:10,370 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:16:10,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:16:10,371 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:16:10,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:16:10,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:16:10,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:16:10,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:16:10,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:16:10,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:16:10,373 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:16:10,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:16:10,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:16:10,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:16:10,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:16:10,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:16:10,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:16:10,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:16:10,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:16:10,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:16:10,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:16:10,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:16:10,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:16:10,377 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:16:10,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:16:10,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:16:10,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:16:10,379 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_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdb7543d1c240ce49edc036e26416805e34b577c5ba56fd044d3b26828ca42a8 [2021-11-22 16:16:10,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:16:10,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:16:10,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:16:10,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:16:10,704 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:16:10,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2021-11-22 16:16:10,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/data/9afe5bd33/2eb0c7887a7b4437bf3c1ba8e4058d42/FLAG52cd559c9 [2021-11-22 16:16:11,214 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:16:11,215 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/sv-benchmarks/c/bitvector/num_conversion_1.c [2021-11-22 16:16:11,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/data/9afe5bd33/2eb0c7887a7b4437bf3c1ba8e4058d42/FLAG52cd559c9 [2021-11-22 16:16:11,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/data/9afe5bd33/2eb0c7887a7b4437bf3c1ba8e4058d42 [2021-11-22 16:16:11,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:16:11,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:16:11,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:16:11,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:16:11,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:16:11,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d2e5f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11, skipping insertion in model container [2021-11-22 16:16:11,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:16:11,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:16:11,813 WARN L230 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_f9691058-cda0-46f3-a58e-94c6de8cfd3b/sv-benchmarks/c/bitvector/num_conversion_1.c[673,686] [2021-11-22 16:16:11,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:16:11,837 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:16:11,849 WARN L230 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_f9691058-cda0-46f3-a58e-94c6de8cfd3b/sv-benchmarks/c/bitvector/num_conversion_1.c[673,686] [2021-11-22 16:16:11,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:16:11,866 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:16:11,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11 WrapperNode [2021-11-22 16:16:11,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:16:11,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:16:11,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:16:11,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:16:11,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,901 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-11-22 16:16:11,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:16:11,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:16:11,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:16:11,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:16:11,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:16:11,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:16:11,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:16:11,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:16:11,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (1/1) ... [2021-11-22 16:16:11,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:16:11,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:16:11,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:16:12,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:16:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:16:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:16:12,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:16:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:16:12,088 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:16:12,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:16:12,207 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:16:12,212 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:16:12,213 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 16:16:12,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:12 BoogieIcfgContainer [2021-11-22 16:16:12,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:16:12,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:16:12,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:16:12,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:16:12,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:16:11" (1/3) ... [2021-11-22 16:16:12,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624a9c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:16:12, skipping insertion in model container [2021-11-22 16:16:12,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:11" (2/3) ... [2021-11-22 16:16:12,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624a9c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:16:12, skipping insertion in model container [2021-11-22 16:16:12,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:12" (3/3) ... [2021-11-22 16:16:12,225 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2021-11-22 16:16:12,230 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:16:12,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 16:16:12,277 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:16:12,285 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 [2021-11-22 16:16:12,285 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 16:16:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 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) [2021-11-22 16:16:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:16:12,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:12,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:16:12,312 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2021-11-22 16:16:12,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:16:12,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885964048] [2021-11-22 16:16:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:12,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:16:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:12,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:16:12,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885964048] [2021-11-22 16:16:12,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885964048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:16:12,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:16:12,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:16:12,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613845102] [2021-11-22 16:16:12,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:16:12,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 16:16:12,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:16:12,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 16:16:12,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:16:12,543 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:12,561 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-11-22 16:16:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 16:16:12,563 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-11-22 16:16:12,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:12,571 INFO L225 Difference]: With dead ends: 21 [2021-11-22 16:16:12,572 INFO L226 Difference]: Without dead ends: 9 [2021-11-22 16:16:12,576 INFO L932 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 [2021-11-22 16:16:12,580 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:12,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:16:12,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-22 16:16:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-22 16:16:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-22 16:16:12,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-11-22 16:16:12,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:12,620 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-22 16:16:12,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:12,620 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-11-22 16:16:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:16:12,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:12,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:16:12,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:16:12,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:12,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:12,628 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2021-11-22 16:16:12,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:16:12,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514508893] [2021-11-22 16:16:12,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:12,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:16:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:12,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:16:12,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514508893] [2021-11-22 16:16:12,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514508893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:16:12,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:16:12,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:16:12,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858413719] [2021-11-22 16:16:12,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:16:12,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:16:12,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:16:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:16:12,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:16:12,754 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:12,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:12,767 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-11-22 16:16:12,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:16:12,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-11-22 16:16:12,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:12,769 INFO L225 Difference]: With dead ends: 16 [2021-11-22 16:16:12,769 INFO L226 Difference]: Without dead ends: 12 [2021-11-22 16:16:12,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:16:12,772 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:12,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:16:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-22 16:16:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2021-11-22 16:16:12,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2021-11-22 16:16:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-11-22 16:16:12,777 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-11-22 16:16:12,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:12,778 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-22 16:16:12,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-22 16:16:12,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 16:16:12,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:12,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:12,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:16:12,780 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:12,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2021-11-22 16:16:12,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:16:12,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124027307] [2021-11-22 16:16:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:12,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:16:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:12,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:16:12,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124027307] [2021-11-22 16:16:12,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124027307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:16:12,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178028956] [2021-11-22 16:16:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:12,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:16:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:16:12,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:16:12,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 16:16:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:12,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 16:16:12,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:13,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:13,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178028956] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:16:13,189 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:16:13,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 8 [2021-11-22 16:16:13,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71050550] [2021-11-22 16:16:13,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:16:13,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:16:13,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:16:13,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:16:13,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:16:13,194 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-11-22 16:16:13,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:13,291 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-11-22 16:16:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:16:13,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 9 [2021-11-22 16:16:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:13,293 INFO L225 Difference]: With dead ends: 23 [2021-11-22 16:16:13,293 INFO L226 Difference]: Without dead ends: 19 [2021-11-22 16:16:13,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:16:13,296 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:13,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 29 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:16:13,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-22 16:16:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-22 16:16:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-22 16:16:13,302 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2021-11-22 16:16:13,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:13,302 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-22 16:16:13,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-11-22 16:16:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-22 16:16:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 16:16:13,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:13,304 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:13,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 16:16:13,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:16:13,533 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:13,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:13,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2021-11-22 16:16:13,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:16:13,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892877055] [2021-11-22 16:16:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:13,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:16:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:13,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:16:13,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892877055] [2021-11-22 16:16:13,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892877055] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:16:13,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350046999] [2021-11-22 16:16:13,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 16:16:13,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:16:13,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:16:13,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:16:13,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 16:16:13,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 16:16:13,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:16:13,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 16:16:13,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:13,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:14,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350046999] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:16:14,105 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:16:14,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2021-11-22 16:16:14,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134543229] [2021-11-22 16:16:14,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:16:14,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 16:16:14,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:16:14,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 16:16:14,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-11-22 16:16:14,109 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:14,799 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2021-11-22 16:16:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 16:16:14,800 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-22 16:16:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:14,802 INFO L225 Difference]: With dead ends: 41 [2021-11-22 16:16:14,802 INFO L226 Difference]: Without dead ends: 37 [2021-11-22 16:16:14,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2021-11-22 16:16:14,804 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 68 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:14,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 96 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:16:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-22 16:16:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-22 16:16:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-11-22 16:16:14,813 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2021-11-22 16:16:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:14,814 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-11-22 16:16:14,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2021-11-22 16:16:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 16:16:14,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:14,816 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:14,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:15,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:16:15,029 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2021-11-22 16:16:15,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:16:15,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209371642] [2021-11-22 16:16:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:15,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:16:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:16:15,053 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 16:16:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:16:15,097 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 16:16:15,097 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 16:16:15,109 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 16:16:15,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:16:15,115 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2021-11-22 16:16:15,118 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 16:16:15,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 04:16:15 BoogieIcfgContainer [2021-11-22 16:16:15,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 16:16:15,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 16:16:15,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 16:16:15,166 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 16:16:15,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:12" (3/4) ... [2021-11-22 16:16:15,169 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 16:16:15,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 16:16:15,170 INFO L158 Benchmark]: Toolchain (without parser) took 3581.57ms. Allocated memory was 79.7MB in the beginning and 134.2MB in the end (delta: 54.5MB). Free memory was 41.7MB in the beginning and 91.1MB in the end (delta: -49.4MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-11-22 16:16:15,170 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 79.7MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:16:15,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.29ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 41.6MB in the beginning and 69.8MB in the end (delta: -28.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-22 16:16:15,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.53ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 68.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:16:15,172 INFO L158 Benchmark]: Boogie Preprocessor took 22.03ms. Allocated memory is still 96.5MB. Free memory was 68.3MB in the beginning and 67.5MB in the end (delta: 816.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:16:15,172 INFO L158 Benchmark]: RCFGBuilder took 289.58ms. Allocated memory is still 96.5MB. Free memory was 67.5MB in the beginning and 58.6MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 16:16:15,173 INFO L158 Benchmark]: TraceAbstraction took 2946.56ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 58.2MB in the beginning and 92.2MB in the end (delta: -34.0MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2021-11-22 16:16:15,173 INFO L158 Benchmark]: Witness Printer took 4.09ms. Allocated memory is still 134.2MB. Free memory was 92.2MB in the beginning and 91.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:16:15,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 79.7MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.29ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 41.6MB in the beginning and 69.8MB in the end (delta: -28.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.53ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 68.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.03ms. Allocated memory is still 96.5MB. Free memory was 68.3MB in the beginning and 67.5MB in the end (delta: 816.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 289.58ms. Allocated memory is still 96.5MB. Free memory was 67.5MB in the beginning and 58.6MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2946.56ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 58.2MB in the beginning and 92.2MB in the end (delta: -34.0MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * Witness Printer took 4.09ms. Allocated memory is still 134.2MB. Free memory was 92.2MB in the beginning and 91.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * 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 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 32, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L24] unsigned char x; [L25] unsigned char y; [L26] unsigned char c; [L28] x = 37 [L29] y = 0 [L30] c = 0 VAL [c=0, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=0, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=0, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=1, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=1, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=1, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=2, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=2, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=2, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=3, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=3, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=3, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=4, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=4, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=4, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=5, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=5, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=5, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=6, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=6, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=6, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=7, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; VAL [c=7, x=37, y=0] [L34] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=7, x=37, y=0] [L37] c = c + ((unsigned char)1) VAL [bit=0, c=8, x=37, y=0] [L31] COND FALSE !(c < (unsigned char)8) VAL [bit=0, c=8, x=37, y=0] [L39] CALL __VERIFIER_assert(x == y) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 153 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 47 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 26, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 595 SizeOfPredicates, 4 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/69 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-22 16:16:15,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0 --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 bdb7543d1c240ce49edc036e26416805e34b577c5ba56fd044d3b26828ca42a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:16:17,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:16:17,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:16:17,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:16:17,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:16:17,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:16:17,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:16:17,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:16:17,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:16:17,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:16:17,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:16:17,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:16:17,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:16:17,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:16:17,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:16:17,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:16:17,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:16:17,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:16:17,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:16:17,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:16:17,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:16:17,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:16:17,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:16:17,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:16:17,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:16:17,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:16:17,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:16:17,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:16:17,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:16:17,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:16:17,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:16:17,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:16:17,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:16:17,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:16:17,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:16:17,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:16:17,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:16:17,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:16:17,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:16:17,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:16:17,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:16:17,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-22 16:16:17,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:16:17,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:16:17,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:16:17,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:16:17,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:16:17,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:16:17,870 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:16:17,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:16:17,870 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:16:17,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:16:17,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:16:17,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:16:17,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:16:17,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:16:17,873 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 16:16:17,873 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 16:16:17,873 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 16:16:17,873 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:16:17,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:16:17,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:16:17,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:16:17,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:16:17,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:16:17,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:16:17,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:16:17,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:16:17,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:16:17,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:16:17,876 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 16:16:17,876 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 16:16:17,876 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:16:17,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:16:17,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:16:17,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:16:17,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 16:16:17,877 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdb7543d1c240ce49edc036e26416805e34b577c5ba56fd044d3b26828ca42a8 [2021-11-22 16:16:18,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:16:18,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:16:18,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:16:18,273 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:16:18,274 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:16:18,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2021-11-22 16:16:18,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/data/3ba10fe85/a56897d27b584b469e91123dc723b85f/FLAG38a747a72 [2021-11-22 16:16:18,949 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:16:18,950 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/sv-benchmarks/c/bitvector/num_conversion_1.c [2021-11-22 16:16:18,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/data/3ba10fe85/a56897d27b584b469e91123dc723b85f/FLAG38a747a72 [2021-11-22 16:16:19,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/data/3ba10fe85/a56897d27b584b469e91123dc723b85f [2021-11-22 16:16:19,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:16:19,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:16:19,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:16:19,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:16:19,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:16:19,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b2aeb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19, skipping insertion in model container [2021-11-22 16:16:19,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:16:19,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:16:19,483 WARN L230 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_f9691058-cda0-46f3-a58e-94c6de8cfd3b/sv-benchmarks/c/bitvector/num_conversion_1.c[673,686] [2021-11-22 16:16:19,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:16:19,507 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:16:19,542 WARN L230 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_f9691058-cda0-46f3-a58e-94c6de8cfd3b/sv-benchmarks/c/bitvector/num_conversion_1.c[673,686] [2021-11-22 16:16:19,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:16:19,591 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:16:19,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19 WrapperNode [2021-11-22 16:16:19,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:16:19,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:16:19,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:16:19,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:16:19,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,630 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-11-22 16:16:19,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:16:19,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:16:19,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:16:19,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:16:19,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:16:19,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:16:19,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:16:19,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:16:19,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (1/1) ... [2021-11-22 16:16:19,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:16:19,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:16:19,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:16:19,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:16:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:16:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:16:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:16:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 16:16:19,837 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:16:19,840 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:16:19,982 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:16:19,987 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:16:19,987 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 16:16:19,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:19 BoogieIcfgContainer [2021-11-22 16:16:19,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:16:19,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:16:19,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:16:19,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:16:19,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:16:19" (1/3) ... [2021-11-22 16:16:19,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481bf2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:16:19, skipping insertion in model container [2021-11-22 16:16:19,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:16:19" (2/3) ... [2021-11-22 16:16:19,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481bf2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:16:19, skipping insertion in model container [2021-11-22 16:16:19,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:19" (3/3) ... [2021-11-22 16:16:19,997 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2021-11-22 16:16:20,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:16:20,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 16:16:20,062 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:16:20,070 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 [2021-11-22 16:16:20,070 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 16:16:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 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) [2021-11-22 16:16:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:16:20,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:20,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:16:20,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:20,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2021-11-22 16:16:20,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:20,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801612219] [2021-11-22 16:16:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:20,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:20,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:20,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:20,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 16:16:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:20,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-22 16:16:20,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:20,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:20,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:16:20,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801612219] [2021-11-22 16:16:20,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801612219] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:16:20,264 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:16:20,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 16:16:20,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793419444] [2021-11-22 16:16:20,267 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:16:20,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 16:16:20,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:16:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 16:16:20,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:16:20,299 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:20,312 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-11-22 16:16:20,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 16:16:20,315 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-11-22 16:16:20,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:20,322 INFO L225 Difference]: With dead ends: 21 [2021-11-22 16:16:20,322 INFO L226 Difference]: Without dead ends: 9 [2021-11-22 16:16:20,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:16:20,336 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:20,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:16:20,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-22 16:16:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-22 16:16:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:20,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-22 16:16:20,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-11-22 16:16:20,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:20,387 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-22 16:16:20,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:20,388 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-11-22 16:16:20,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:16:20,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:20,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:16:20,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:20,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:16:20,600 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:20,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:20,602 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2021-11-22 16:16:20,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:20,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842257504] [2021-11-22 16:16:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:20,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:20,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:20,606 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:20,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 16:16:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:20,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 16:16:20,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:20,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:20,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:16:20,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842257504] [2021-11-22 16:16:20,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842257504] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:16:20,732 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:16:20,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-22 16:16:20,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785712391] [2021-11-22 16:16:20,733 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:16:20,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:16:20,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:16:20,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:16:20,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:16:20,736 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:20,755 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-22 16:16:20,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:16:20,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-22 16:16:20,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:20,757 INFO L225 Difference]: With dead ends: 17 [2021-11-22 16:16:20,757 INFO L226 Difference]: Without dead ends: 13 [2021-11-22 16:16:20,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:16:20,760 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:20,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:16:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-22 16:16:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-22 16:16:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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) [2021-11-22 16:16:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-22 16:16:20,769 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2021-11-22 16:16:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:20,770 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-22 16:16:20,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-22 16:16:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 16:16:20,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:20,771 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:20,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:20,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:16:20,985 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:20,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:20,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 1 times [2021-11-22 16:16:20,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:20,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22674547] [2021-11-22 16:16:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:20,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:20,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:20,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:20,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 16:16:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:21,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:16:21,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 16:16:21,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 16:16:21,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:16:21,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22674547] [2021-11-22 16:16:21,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22674547] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:16:21,143 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:16:21,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 16:16:21,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842227942] [2021-11-22 16:16:21,144 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:16:21,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:16:21,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:16:21,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:16:21,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:16:21,146 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-11-22 16:16:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:21,191 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-11-22 16:16:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:16:21,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 12 [2021-11-22 16:16:21,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:21,192 INFO L225 Difference]: With dead ends: 28 [2021-11-22 16:16:21,193 INFO L226 Difference]: Without dead ends: 19 [2021-11-22 16:16:21,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:16:21,195 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:21,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 43 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:16:21,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-22 16:16:21,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-11-22 16:16:21,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2021-11-22 16:16:21,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-22 16:16:21,201 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2021-11-22 16:16:21,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:21,202 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-22 16:16:21,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-11-22 16:16:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-22 16:16:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 16:16:21,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:21,218 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:21,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:21,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:16:21,430 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:21,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:21,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1664855024, now seen corresponding path program 1 times [2021-11-22 16:16:21,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:21,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046685123] [2021-11-22 16:16:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:16:21,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:21,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:21,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:21,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 16:16:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:16:21,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 16:16:21,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:21,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:21,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:16:21,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046685123] [2021-11-22 16:16:21,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046685123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:16:21,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:16:21,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-22 16:16:21,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870244427] [2021-11-22 16:16:21,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:16:21,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:16:21,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:16:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:16:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:16:21,686 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:21,812 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-11-22 16:16:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 16:16:21,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 12 [2021-11-22 16:16:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:21,814 INFO L225 Difference]: With dead ends: 29 [2021-11-22 16:16:21,814 INFO L226 Difference]: Without dead ends: 25 [2021-11-22 16:16:21,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:16:21,816 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:21,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 37 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:16:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-22 16:16:21,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-22 16:16:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-11-22 16:16:21,824 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 12 [2021-11-22 16:16:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:21,825 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-11-22 16:16:21,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-11-22 16:16:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 16:16:21,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:21,826 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:21,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:22,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:16:22,036 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:22,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2085526576, now seen corresponding path program 2 times [2021-11-22 16:16:22,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:22,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177821398] [2021-11-22 16:16:22,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 16:16:22,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:22,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:22,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:22,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 16:16:22,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 16:16:22,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:16:22,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 16:16:22,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 16:16:22,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 16:16:22,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:16:22,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177821398] [2021-11-22 16:16:22,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177821398] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:16:22,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:16:22,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-22 16:16:22,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837527891] [2021-11-22 16:16:22,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:16:22,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 16:16:22,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:16:22,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 16:16:22,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:16:22,343 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:22,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:22,608 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-11-22 16:16:22,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 16:16:22,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 16:16:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:22,614 INFO L225 Difference]: With dead ends: 54 [2021-11-22 16:16:22,614 INFO L226 Difference]: Without dead ends: 39 [2021-11-22 16:16:22,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-22 16:16:22,616 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:22,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 54 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:16:22,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-22 16:16:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2021-11-22 16:16:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-22 16:16:22,624 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 24 [2021-11-22 16:16:22,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:22,624 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-22 16:16:22,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:22,624 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-22 16:16:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 16:16:22,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:22,625 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:22,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:22,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:16:22,836 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:22,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:22,837 INFO L85 PathProgramCache]: Analyzing trace with hash -986835344, now seen corresponding path program 3 times [2021-11-22 16:16:22,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:22,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25501481] [2021-11-22 16:16:22,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 16:16:22,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:22,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:22,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:22,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 16:16:22,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-22 16:16:22,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:16:22,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 16:16:22,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-22 16:16:23,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-22 16:16:23,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:16:23,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25501481] [2021-11-22 16:16:23,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25501481] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:16:23,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:16:23,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-22 16:16:23,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349123624] [2021-11-22 16:16:23,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:16:23,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 16:16:23,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:16:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 16:16:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:16:23,302 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:23,411 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-11-22 16:16:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:16:23,412 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 16:16:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:23,413 INFO L225 Difference]: With dead ends: 38 [2021-11-22 16:16:23,413 INFO L226 Difference]: Without dead ends: 34 [2021-11-22 16:16:23,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-22 16:16:23,415 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:23,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 12 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2021-11-22 16:16:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-22 16:16:23,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2021-11-22 16:16:23,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-22 16:16:23,423 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 24 [2021-11-22 16:16:23,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:23,424 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-22 16:16:23,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-11-22 16:16:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 16:16:23,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:23,426 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:23,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:23,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:16:23,637 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:23,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1835661531, now seen corresponding path program 4 times [2021-11-22 16:16:23,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:23,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742982354] [2021-11-22 16:16:23,639 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 16:16:23,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:23,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:23,640 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:23,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-22 16:16:23,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 16:16:23,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:16:23,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 16:16:23,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:23,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:24,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:16:24,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742982354] [2021-11-22 16:16:24,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742982354] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:16:24,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:16:24,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-22 16:16:24,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754538723] [2021-11-22 16:16:24,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:16:24,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 16:16:24,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:16:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 16:16:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-22 16:16:24,017 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:16:24,128 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-11-22 16:16:24,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 16:16:24,129 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 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 27 [2021-11-22 16:16:24,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:16:24,130 INFO L225 Difference]: With dead ends: 42 [2021-11-22 16:16:24,130 INFO L226 Difference]: Without dead ends: 38 [2021-11-22 16:16:24,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-22 16:16:24,132 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 51 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:16:24,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 142 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:16:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-22 16:16:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2021-11-22 16:16:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-11-22 16:16:24,140 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 27 [2021-11-22 16:16:24,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:16:24,140 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-11-22 16:16:24,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:16:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-11-22 16:16:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 16:16:24,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:16:24,141 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2021-11-22 16:16:24,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-22 16:16:24,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:16:24,352 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:16:24,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:16:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash -29656432, now seen corresponding path program 5 times [2021-11-22 16:16:24,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:16:24,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766030767] [2021-11-22 16:16:24,354 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 16:16:24,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:16:24,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:16:24,356 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:16:24,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-22 16:16:24,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-11-22 16:16:24,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:16:24,402 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-22 16:16:24,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:16:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:26,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:16:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 7 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:16:30,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:16:30,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766030767] [2021-11-22 16:16:30,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766030767] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:16:30,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:16:30,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2021-11-22 16:16:30,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123215424] [2021-11-22 16:16:30,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:16:30,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-22 16:16:30,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:16:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-22 16:16:30,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=2249, Unknown=0, NotChecked=0, Total=2652 [2021-11-22 16:16:30,694 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:17:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:17:01,079 INFO L93 Difference]: Finished difference Result 140 states and 176 transitions. [2021-11-22 16:17:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-22 16:17:01,082 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2021-11-22 16:17:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:17:01,085 INFO L225 Difference]: With dead ends: 140 [2021-11-22 16:17:01,085 INFO L226 Difference]: Without dead ends: 127 [2021-11-22 16:17:01,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5744 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=3018, Invalid=16722, Unknown=0, NotChecked=0, Total=19740 [2021-11-22 16:17:01,100 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 227 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-22 16:17:01,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 68 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 934 Invalid, 0 Unknown, 61 Unchecked, 1.7s Time] [2021-11-22 16:17:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-22 16:17:01,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 101. [2021-11-22 16:17:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.28) internal successors, (128), 100 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:17:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2021-11-22 16:17:01,124 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 30 [2021-11-22 16:17:01,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:17:01,125 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2021-11-22 16:17:01,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:17:01,125 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2021-11-22 16:17:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 16:17:01,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:17:01,127 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-22 16:17:01,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-22 16:17:01,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:17:01,347 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:17:01,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:17:01,348 INFO L85 PathProgramCache]: Analyzing trace with hash -709714802, now seen corresponding path program 6 times [2021-11-22 16:17:01,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:17:01,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871632859] [2021-11-22 16:17:01,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-22 16:17:01,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:17:01,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:17:01,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:17:01,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-22 16:17:01,389 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-22 16:17:01,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:17:01,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 16:17:01,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:17:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-22 16:17:01,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:17:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-22 16:17:01,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:17:01,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871632859] [2021-11-22 16:17:01,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871632859] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:17:01,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:17:01,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-11-22 16:17:01,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240787085] [2021-11-22 16:17:01,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:17:01,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 16:17:01,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:17:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 16:17:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:17:01,962 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:17:02,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:17:02,143 INFO L93 Difference]: Finished difference Result 126 states and 155 transitions. [2021-11-22 16:17:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 16:17:02,144 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-22 16:17:02,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:17:02,146 INFO L225 Difference]: With dead ends: 126 [2021-11-22 16:17:02,146 INFO L226 Difference]: Without dead ends: 122 [2021-11-22 16:17:02,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-11-22 16:17:02,148 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:17:02,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2021-11-22 16:17:02,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-22 16:17:02,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 91. [2021-11-22 16:17:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 90 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:17:02,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2021-11-22 16:17:02,174 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 30 [2021-11-22 16:17:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:17:02,176 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2021-11-22 16:17:02,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:17:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2021-11-22 16:17:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 16:17:02,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:17:02,179 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-22 16:17:02,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-22 16:17:02,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:17:02,391 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:17:02,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:17:02,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1250207246, now seen corresponding path program 7 times [2021-11-22 16:17:02,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:17:02,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52626053] [2021-11-22 16:17:02,392 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-22 16:17:02,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:17:02,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:17:02,395 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:17:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:17:02,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-22 16:17:02,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 16:17:02,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:17:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 16:17:02,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:17:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 16:17:02,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:17:02,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52626053] [2021-11-22 16:17:02,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52626053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:17:02,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:17:02,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-22 16:17:02,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138398303] [2021-11-22 16:17:02,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:17:02,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 16:17:02,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:17:02,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 16:17:02,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:17:02,757 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-11-22 16:17:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:17:03,155 INFO L93 Difference]: Finished difference Result 122 states and 152 transitions. [2021-11-22 16:17:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 16:17:03,156 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-22 16:17:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:17:03,157 INFO L225 Difference]: With dead ends: 122 [2021-11-22 16:17:03,157 INFO L226 Difference]: Without dead ends: 62 [2021-11-22 16:17:03,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-11-22 16:17:03,158 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:17:03,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 36 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:17:03,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-22 16:17:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-11-22 16:17:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.15) internal successors, (69), 60 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:17:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-11-22 16:17:03,170 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 30 [2021-11-22 16:17:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:17:03,171 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-11-22 16:17:03,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-11-22 16:17:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-11-22 16:17:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 16:17:03,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:17:03,173 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 10, 5, 1, 1, 1, 1, 1, 1] [2021-11-22 16:17:03,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-22 16:17:03,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:17:03,384 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:17:03,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:17:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash -132834977, now seen corresponding path program 8 times [2021-11-22 16:17:03,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:17:03,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585408355] [2021-11-22 16:17:03,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 16:17:03,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:17:03,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:17:03,386 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:17:03,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 16:17:03,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:17:03,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-22 16:17:03,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 16:17:03,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:17:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 175 proven. 92 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-22 16:17:03,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:17:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 175 proven. 92 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-22 16:17:03,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:17:03,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585408355] [2021-11-22 16:17:03,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585408355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:17:03,837 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:17:03,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-11-22 16:17:03,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718191144] [2021-11-22 16:17:03,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:17:03,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 16:17:03,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:17:03,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 16:17:03,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-11-22 16:17:03,838 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:17:03,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:17:03,912 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-11-22 16:17:03,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 16:17:03,913 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-22 16:17:03,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:17:03,913 INFO L225 Difference]: With dead ends: 61 [2021-11-22 16:17:03,913 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 16:17:03,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-11-22 16:17:03,914 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:17:03,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 92 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:17:03,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 16:17:03,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 16:17:03,915 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) [2021-11-22 16:17:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 16:17:03,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-11-22 16:17:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:17:03,915 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 16:17:03,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:17:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 16:17:03,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 16:17:03,917 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 16:17:03,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-22 16:17:04,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:17:04,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-22 16:17:05,161 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-22 16:17:05,161 INFO L854 garLoopResultBuilder]: At program point L31-2(lines 31 38) the Hoare annotation is: (let ((.cse14 ((_ zero_extend 24) |ULTIMATE.start_main_~c~0#1|))) (let ((.cse16 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse14 (_ bv1 32)))))) (let ((.cse5 ((_ zero_extend 24) |ULTIMATE.start_main_~x~0#1|)) (.cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse16 (_ bv1 32)))))) (let ((.cse15 ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse7))))))) (let ((.cse8 (= (_ bv0 8) .cse15)) (.cse11 (exists ((|v_ULTIMATE.start_main_~c~0#1_65| (_ BitVec 8))) (let ((.cse17 ((_ zero_extend 24) |v_ULTIMATE.start_main_~c~0#1_65|))) (and (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv37 32) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse17)))))) (_ bv0 32))) (= ((_ extract 7 0) (bvadd .cse17 (_ bv1 32))) |ULTIMATE.start_main_~c~0#1|))))) (.cse3 (= |ULTIMATE.start_main_~y~0#1| (_ bv5 8))) (.cse4 (= |ULTIMATE.start_main_~bit~0#1| (_ bv0 8))) (.cse10 ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse16)))))) (.cse12 (not (= ((_ zero_extend 24) .cse15) (_ bv0 32)))) (.cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse14)))) (.cse0 (= ((_ zero_extend 24) |ULTIMATE.start_main_~bit~0#1|) (_ bv0 32))) (.cse9 (= |ULTIMATE.start_main_~y~0#1| (_ bv37 8))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (_ bv37 8))) (.cse2 (= (_ bv1 8) |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv2 8)) .cse1 .cse2) (and .cse3 .cse4 (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse5 .cse6))) (_ bv0 32))) (= ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse7 (_ bv1 32))))))))) (_ bv0 8)) .cse8 .cse1) (and .cse9 (= .cse10 (_ bv0 8)) .cse8 .cse11 .cse1) (and .cse3 .cse12 (= (_ bv4 8) |ULTIMATE.start_main_~bit~0#1|) .cse11 .cse1) (and .cse3 .cse4 (exists ((|v_ULTIMATE.start_main_~c~0#1_65| (_ BitVec 8))) (let ((.cse13 ((_ zero_extend 24) |v_ULTIMATE.start_main_~c~0#1_65|))) (and (= |ULTIMATE.start_main_~c~0#1| ((_ extract 7 0) (bvadd (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse13 (_ bv1 32))))))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv37 32) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse13)))))) (_ bv0 32)))))) .cse1 (not (= ((_ zero_extend 24) .cse10) (_ bv0 32)))) (and (= |ULTIMATE.start_main_~c~0#1| (_ bv8 8)) .cse9 .cse1 (= |ULTIMATE.start_main_~bit~0#1| ((_ extract 7 0) (bvand .cse5 (_ bv128 32))))) (and (= |ULTIMATE.start_main_~y~0#1| (_ bv0 8)) .cse12 (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv37 32) .cse6))))) .cse1) (and (= |ULTIMATE.start_main_~c~0#1| (_ bv7 8)) .cse0 .cse9 .cse1) (and (= (_ bv1 8) |ULTIMATE.start_main_~c~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~bit~0#1|) .cse1 .cse2))))))) [2021-11-22 16:17:05,161 INFO L858 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-11-22 16:17:05,161 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-11-22 16:17:05,161 INFO L861 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2021-11-22 16:17:05,161 INFO L858 garLoopResultBuilder]: For program point L34(lines 34 36) no Hoare annotation was computed. [2021-11-22 16:17:05,162 INFO L858 garLoopResultBuilder]: For program point L34-2(lines 34 36) no Hoare annotation was computed. [2021-11-22 16:17:05,162 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-22 16:17:05,162 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-22 16:17:05,162 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-22 16:17:05,162 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-11-22 16:17:05,162 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-11-22 16:17:05,162 INFO L861 garLoopResultBuilder]: At program point L41(lines 22 42) the Hoare annotation is: true [2021-11-22 16:17:05,164 INFO L732 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2021-11-22 16:17:05,165 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 16:17:05,180 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,181 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,182 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,182 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,182 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,185 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,203 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,203 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,203 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,204 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,204 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,204 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 04:17:05 BoogieIcfgContainer [2021-11-22 16:17:05,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 16:17:05,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 16:17:05,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 16:17:05,208 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 16:17:05,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:16:19" (3/4) ... [2021-11-22 16:17:05,211 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 16:17:05,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-22 16:17:05,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-22 16:17:05,224 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 16:17:05,224 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 16:17:05,248 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((~zero_extendFrom8To32(bit) == 0bv32 && c == 2bv8) && x == 37bv8) && 1bv8 == y) || (((((y == 5bv8 && bit == 0bv8) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]))[7:0]) == 0bv32)) && ~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0] == 0bv8) && 0bv8 == ~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) && x == 37bv8)) || ((((y == 37bv8 && ~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0] == 0bv8) && 0bv8 == ~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) && (\exists v_ULTIMATE.start_main_~c~0#1_65 : bv8 :: !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65))[7:0]))[7:0]) == 0bv32) && ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65), 1bv32)[7:0] == c)) && x == 37bv8)) || ((((y == 5bv8 && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && 4bv8 == bit) && (\exists v_ULTIMATE.start_main_~c~0#1_65 : bv8 :: !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65))[7:0]))[7:0]) == 0bv32) && ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65), 1bv32)[7:0] == c)) && x == 37bv8)) || ((((y == 5bv8 && bit == 0bv8) && (\exists v_ULTIMATE.start_main_~c~0#1_65 : bv8 :: c == ~bvadd64(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65), 1bv32)[7:0]))[7:0] && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65))[7:0]))[7:0]) == 0bv32))) && x == 37bv8) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32))) || (((c == 8bv8 && y == 37bv8) && x == 37bv8) && bit == ~bvand32(~zero_extendFrom8To32(x), 128bv32)[7:0])) || (((y == 0bv8 && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && !(0bv32 == ~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]))[7:0]))) && x == 37bv8)) || (((c == 7bv8 && ~zero_extendFrom8To32(bit) == 0bv32) && y == 37bv8) && x == 37bv8)) || (((1bv8 == c && 1bv8 == bit) && x == 37bv8) && 1bv8 == y) [2021-11-22 16:17:05,256 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 16:17:05,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 16:17:05,257 INFO L158 Benchmark]: Toolchain (without parser) took 45938.49ms. Allocated memory was 56.6MB in the beginning and 111.1MB in the end (delta: 54.5MB). Free memory was 34.4MB in the beginning and 59.4MB in the end (delta: -24.9MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2021-11-22 16:17:05,258 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 56.6MB. Free memory was 36.9MB in the beginning and 36.8MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:17:05,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.13ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 39.4MB in the end (delta: -5.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-22 16:17:05,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.26ms. Allocated memory is still 56.6MB. Free memory was 39.4MB in the beginning and 37.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:17:05,259 INFO L158 Benchmark]: Boogie Preprocessor took 38.41ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 36.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:17:05,260 INFO L158 Benchmark]: RCFGBuilder took 319.14ms. Allocated memory is still 56.6MB. Free memory was 36.8MB in the beginning and 28.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 16:17:05,260 INFO L158 Benchmark]: TraceAbstraction took 45216.11ms. Allocated memory was 56.6MB in the beginning and 111.1MB in the end (delta: 54.5MB). Free memory was 28.1MB in the beginning and 62.5MB in the end (delta: -34.4MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2021-11-22 16:17:05,261 INFO L158 Benchmark]: Witness Printer took 48.80ms. Allocated memory is still 111.1MB. Free memory was 62.5MB in the beginning and 59.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 16:17:05,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 56.6MB. Free memory was 36.9MB in the beginning and 36.8MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.13ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 39.4MB in the end (delta: -5.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.26ms. Allocated memory is still 56.6MB. Free memory was 39.4MB in the beginning and 37.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.41ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 36.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.14ms. Allocated memory is still 56.6MB. Free memory was 36.8MB in the beginning and 28.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 45216.11ms. Allocated memory was 56.6MB in the beginning and 111.1MB in the end (delta: 54.5MB). Free memory was 28.1MB in the beginning and 62.5MB in the end (delta: -34.4MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. * Witness Printer took 48.80ms. Allocated memory is still 111.1MB. Free memory was 62.5MB in the beginning and 59.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] * 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: 16]: 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.1s, OverallIterations: 11, TraceHistogramMax: 15, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 31.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 430 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 430 mSDsluCounter, 537 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 81 IncrementalHoareTripleChecker+Unchecked, 433 mSDsCounter, 433 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1548 IncrementalHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 433 mSolverCounterUnsat, 104 mSDtfsCounter, 1548 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 609 GetRequests, 349 SyntacticMatches, 3 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5917 ImplicationChecksByTransitivity, 34.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=8, InterpolantAutomatonStates: 195, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 90 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 344 HoareAnnotationTreeSize, 3 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1816 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 252 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 482 ConstructedInterpolants, 41 QuantifiedInterpolants, 8118 SizeOfPredicates, 47 NumberOfNonLiveVariables, 544 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 885/1576 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant [2021-11-22 16:17:05,288 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,288 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,289 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,289 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,289 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,289 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,292 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,295 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,295 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,296 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,296 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] [2021-11-22 16:17:05,296 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0#1_65,QUANTIFIED] Derived loop invariant: ((((((((((~zero_extendFrom8To32(bit) == 0bv32 && c == 2bv8) && x == 37bv8) && 1bv8 == y) || (((((y == 5bv8 && bit == 0bv8) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]))[7:0]) == 0bv32)) && ~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0] == 0bv8) && 0bv8 == ~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) && x == 37bv8)) || ((((y == 37bv8 && ~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0] == 0bv8) && 0bv8 == ~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) && (\exists v_ULTIMATE.start_main_~c~0#1_65 : bv8 :: !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65))[7:0]))[7:0]) == 0bv32) && ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65), 1bv32)[7:0] == c)) && x == 37bv8)) || ((((y == 5bv8 && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && 4bv8 == bit) && (\exists v_ULTIMATE.start_main_~c~0#1_65 : bv8 :: !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65))[7:0]))[7:0]) == 0bv32) && ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65), 1bv32)[7:0] == c)) && x == 37bv8)) || ((((y == 5bv8 && bit == 0bv8) && (\exists v_ULTIMATE.start_main_~c~0#1_65 : bv8 :: c == ~bvadd64(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65), 1bv32)[7:0]))[7:0] && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0#1_65))[7:0]))[7:0]) == 0bv32))) && x == 37bv8) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32))) || (((c == 8bv8 && y == 37bv8) && x == 37bv8) && bit == ~bvand32(~zero_extendFrom8To32(x), 128bv32)[7:0])) || (((y == 0bv8 && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && !(0bv32 == ~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]))[7:0]))) && x == 37bv8)) || (((c == 7bv8 && ~zero_extendFrom8To32(bit) == 0bv32) && y == 37bv8) && x == 37bv8)) || (((1bv8 == c && 1bv8 == bit) && x == 37bv8) && 1bv8 == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-22 16:17:05,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9691058-cda0-46f3-a58e-94c6de8cfd3b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE