./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer --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 22f8891fc10bb8c305de18eb9540699e7b8a01ce ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer --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 22f8891fc10bb8c305de18eb9540699e7b8a01ce ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 14:54:00,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:54:00,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:54:00,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:54:00,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:54:00,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:54:00,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:54:00,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:54:00,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:54:00,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:54:00,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:54:00,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:54:00,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:54:00,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:54:00,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:54:00,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:54:00,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:54:00,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:54:00,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:54:00,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:54:00,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:54:00,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:54:00,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:54:00,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:54:00,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:54:00,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:54:00,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:54:00,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:54:00,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:54:00,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:54:00,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:54:00,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:54:00,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:54:00,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:54:00,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:54:00,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:54:00,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:54:00,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:54:00,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:54:00,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:54:00,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:54:00,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 14:54:00,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:54:00,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:54:00,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:54:00,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:54:00,255 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:54:00,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:54:00,256 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:54:00,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:54:00,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:54:00,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:54:00,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 14:54:00,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:54:00,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 14:54:00,259 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:54:00,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:54:00,259 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:54:00,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 14:54:00,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:54:00,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:54:00,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:54:00,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:54:00,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:54:00,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:54:00,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:54:00,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 14:54:00,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:54:00,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 14:54:00,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 14:54:00,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:54:00,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2020-12-01 14:54:00,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:54:00,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:54:00,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:54:00,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:54:00,598 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:54:00,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2020-12-01 14:54:00,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/data/033a6ec17/129a9d024bfb417ca51699492068f80b/FLAG95279e21f [2020-12-01 14:54:01,206 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:54:01,207 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/sv-benchmarks/c/bitvector/num_conversion_1.c [2020-12-01 14:54:01,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/data/033a6ec17/129a9d024bfb417ca51699492068f80b/FLAG95279e21f [2020-12-01 14:54:01,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/data/033a6ec17/129a9d024bfb417ca51699492068f80b [2020-12-01 14:54:01,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:54:01,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:54:01,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:01,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:54:01,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:54:01,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e513e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01, skipping insertion in model container [2020-12-01 14:54:01,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:54:01,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:54:01,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:01,827 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:54:01,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:01,860 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:54:01,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01 WrapperNode [2020-12-01 14:54:01,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:01,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:01,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:54:01,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:54:01,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:01,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:54:01,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:54:01,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:54:01,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (1/1) ... [2020-12-01 14:54:01,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:54:01,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:54:01,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:54:01,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:54:01,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:54:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:54:01,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:54:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 14:54:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:54:02,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:54:02,302 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 14:54:02,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:02 BoogieIcfgContainer [2020-12-01 14:54:02,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:54:02,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:54:02,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:54:02,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:54:02,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:54:01" (1/3) ... [2020-12-01 14:54:02,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3a7b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:02, skipping insertion in model container [2020-12-01 14:54:02,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:01" (2/3) ... [2020-12-01 14:54:02,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3a7b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:02, skipping insertion in model container [2020-12-01 14:54:02,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:02" (3/3) ... [2020-12-01 14:54:02,315 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2020-12-01 14:54:02,334 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:54:02,337 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 14:54:02,348 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 14:54:02,386 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:54:02,386 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 14:54:02,386 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:54:02,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:54:02,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:54:02,387 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:54:02,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:54:02,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:54:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-01 14:54:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 14:54:02,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:02,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 14:54:02,411 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:02,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:02,419 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2020-12-01 14:54:02,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:02,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034132247] [2020-12-01 14:54:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:02,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034132247] [2020-12-01 14:54:02,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:02,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:54:02,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197705951] [2020-12-01 14:54:02,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 14:54:02,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:02,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 14:54:02,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:54:02,636 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-12-01 14:54:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:02,653 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-12-01 14:54:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 14:54:02,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-01 14:54:02,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:02,673 INFO L225 Difference]: With dead ends: 22 [2020-12-01 14:54:02,675 INFO L226 Difference]: Without dead ends: 9 [2020-12-01 14:54:02,678 INFO L677 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 [2020-12-01 14:54:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-01 14:54:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-01 14:54:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-01 14:54:02,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-01 14:54:02,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2020-12-01 14:54:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:02,714 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-01 14:54:02,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 14:54:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-01 14:54:02,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 14:54:02,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:02,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 14:54:02,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 14:54:02,716 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:02,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:02,720 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2020-12-01 14:54:02,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:02,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883223528] [2020-12-01 14:54:02,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:02,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883223528] [2020-12-01 14:54:02,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:02,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:54:02,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889688324] [2020-12-01 14:54:02,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:54:02,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:02,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:54:02,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:54:02,803 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-12-01 14:54:02,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:02,818 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-01 14:54:02,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:54:02,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-01 14:54:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:02,820 INFO L225 Difference]: With dead ends: 16 [2020-12-01 14:54:02,820 INFO L226 Difference]: Without dead ends: 12 [2020-12-01 14:54:02,821 INFO L677 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 [2020-12-01 14:54:02,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-01 14:54:02,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2020-12-01 14:54:02,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-01 14:54:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-01 14:54:02,825 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2020-12-01 14:54:02,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:02,826 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-01 14:54:02,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:54:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-01 14:54:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 14:54:02,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:02,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:02,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 14:54:02,828 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:02,828 INFO L82 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2020-12-01 14:54:02,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:02,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851066020] [2020-12-01 14:54:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:02,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851066020] [2020-12-01 14:54:02,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225318261] [2020-12-01 14:54:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:03,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 14:54:03,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:03,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:03,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-01 14:54:03,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870025561] [2020-12-01 14:54:03,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:54:03,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:03,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:54:03,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:03,092 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 5 states. [2020-12-01 14:54:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:03,134 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-12-01 14:54:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:54:03,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-01 14:54:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:03,136 INFO L225 Difference]: With dead ends: 19 [2020-12-01 14:54:03,141 INFO L226 Difference]: Without dead ends: 15 [2020-12-01 14:54:03,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-01 14:54:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-12-01 14:54:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-01 14:54:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-12-01 14:54:03,145 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2020-12-01 14:54:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:03,146 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-12-01 14:54:03,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:54:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-01 14:54:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 14:54:03,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:03,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:03,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-01 14:54:03,348 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:03,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:03,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 2 times [2020-12-01 14:54:03,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:03,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580434636] [2020-12-01 14:54:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:03,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580434636] [2020-12-01 14:54:03,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995313956] [2020-12-01 14:54:03,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:03,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 14:54:03,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:54:03,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 14:54:03,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:03,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:03,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-01 14:54:03,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972787210] [2020-12-01 14:54:03,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 14:54:03,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:03,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 14:54:03,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:54:03,553 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 7 states. [2020-12-01 14:54:03,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:03,584 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-12-01 14:54:03,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:03,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-01 14:54:03,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:03,585 INFO L225 Difference]: With dead ends: 22 [2020-12-01 14:54:03,585 INFO L226 Difference]: Without dead ends: 18 [2020-12-01 14:54:03,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:54:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-01 14:54:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-12-01 14:54:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-01 14:54:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-12-01 14:54:03,590 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 12 [2020-12-01 14:54:03,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:03,591 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-12-01 14:54:03,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 14:54:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-12-01 14:54:03,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 14:54:03,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:03,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:03,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:03,820 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:03,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:03,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1268104729, now seen corresponding path program 3 times [2020-12-01 14:54:03,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:03,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185477724] [2020-12-01 14:54:03,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:03,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185477724] [2020-12-01 14:54:03,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486189477] [2020-12-01 14:54:03,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:03,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-01 14:54:03,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:54:03,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 14:54:03,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:04,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:04,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-01 14:54:04,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943351468] [2020-12-01 14:54:04,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 14:54:04,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:04,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 14:54:04,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-01 14:54:04,043 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 9 states. [2020-12-01 14:54:04,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:04,094 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2020-12-01 14:54:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 14:54:04,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-01 14:54:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:04,095 INFO L225 Difference]: With dead ends: 25 [2020-12-01 14:54:04,096 INFO L226 Difference]: Without dead ends: 21 [2020-12-01 14:54:04,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-01 14:54:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-01 14:54:04,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-12-01 14:54:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-01 14:54:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-12-01 14:54:04,101 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 15 [2020-12-01 14:54:04,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:04,102 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-12-01 14:54:04,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 14:54:04,102 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-12-01 14:54:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 14:54:04,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:04,103 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:04,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:04,319 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:04,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:04,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 4 times [2020-12-01 14:54:04,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:04,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474024199] [2020-12-01 14:54:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:04,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474024199] [2020-12-01 14:54:04,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949259630] [2020-12-01 14:54:04,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:04,536 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 14:54:04,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:54:04,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 14:54:04,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:04,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:04,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-12-01 14:54:04,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114623322] [2020-12-01 14:54:04,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 14:54:04,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:04,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 14:54:04,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-01 14:54:04,627 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 11 states. [2020-12-01 14:54:04,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:04,688 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-12-01 14:54:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 14:54:04,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-12-01 14:54:04,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:04,689 INFO L225 Difference]: With dead ends: 28 [2020-12-01 14:54:04,689 INFO L226 Difference]: Without dead ends: 24 [2020-12-01 14:54:04,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-01 14:54:04,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-01 14:54:04,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-12-01 14:54:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-01 14:54:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-12-01 14:54:04,694 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 18 [2020-12-01 14:54:04,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:04,695 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-12-01 14:54:04,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 14:54:04,695 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-12-01 14:54:04,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 14:54:04,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:04,696 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:04,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:04,912 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:04,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:04,913 INFO L82 PathProgramCache]: Analyzing trace with hash -133759111, now seen corresponding path program 5 times [2020-12-01 14:54:04,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:04,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314593992] [2020-12-01 14:54:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:05,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314593992] [2020-12-01 14:54:05,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653010745] [2020-12-01 14:54:05,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:05,142 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-01 14:54:05,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:54:05,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-01 14:54:05,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:05,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:05,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-12-01 14:54:05,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273894697] [2020-12-01 14:54:05,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 14:54:05,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:05,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 14:54:05,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-01 14:54:05,304 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 13 states. [2020-12-01 14:54:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:05,414 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2020-12-01 14:54:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 14:54:05,415 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-12-01 14:54:05,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:05,416 INFO L225 Difference]: With dead ends: 31 [2020-12-01 14:54:05,416 INFO L226 Difference]: Without dead ends: 27 [2020-12-01 14:54:05,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-01 14:54:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-01 14:54:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-12-01 14:54:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-01 14:54:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-12-01 14:54:05,421 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 21 [2020-12-01 14:54:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:05,421 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-12-01 14:54:05,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 14:54:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-12-01 14:54:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 14:54:05,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:05,422 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:05,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-01 14:54:05,642 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:05,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:05,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1786738894, now seen corresponding path program 6 times [2020-12-01 14:54:05,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:05,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790717005] [2020-12-01 14:54:05,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:05,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790717005] [2020-12-01 14:54:05,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859119082] [2020-12-01 14:54:05,823 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:05,922 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-01 14:54:05,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:54:05,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 14:54:05,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:06,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:06,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-12-01 14:54:06,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343717392] [2020-12-01 14:54:06,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-01 14:54:06,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:06,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-01 14:54:06,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-01 14:54:06,168 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 15 states. [2020-12-01 14:54:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:06,291 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-12-01 14:54:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 14:54:06,292 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-12-01 14:54:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:06,292 INFO L225 Difference]: With dead ends: 34 [2020-12-01 14:54:06,293 INFO L226 Difference]: Without dead ends: 30 [2020-12-01 14:54:06,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-01 14:54:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-01 14:54:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-12-01 14:54:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-01 14:54:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-12-01 14:54:06,317 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 24 [2020-12-01 14:54:06,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:06,317 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-12-01 14:54:06,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-01 14:54:06,317 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-12-01 14:54:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 14:54:06,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:06,319 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:06,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:06,523 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:06,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:06,523 INFO L82 PathProgramCache]: Analyzing trace with hash 387561689, now seen corresponding path program 7 times [2020-12-01 14:54:06,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:06,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658649159] [2020-12-01 14:54:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:06,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658649159] [2020-12-01 14:54:06,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737662860] [2020-12-01 14:54:06,683 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:06,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-01 14:54:06,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:06,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:06,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2020-12-01 14:54:06,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108282284] [2020-12-01 14:54:06,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-01 14:54:06,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:06,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-01 14:54:06,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-12-01 14:54:06,993 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 17 states. [2020-12-01 14:54:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:07,163 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-12-01 14:54:07,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 14:54:07,163 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2020-12-01 14:54:07,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:07,167 INFO L225 Difference]: With dead ends: 37 [2020-12-01 14:54:07,167 INFO L226 Difference]: Without dead ends: 33 [2020-12-01 14:54:07,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-12-01 14:54:07,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-01 14:54:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-12-01 14:54:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 14:54:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2020-12-01 14:54:07,187 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 27 [2020-12-01 14:54:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:07,188 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2020-12-01 14:54:07,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-01 14:54:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2020-12-01 14:54:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 14:54:07,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:07,189 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:07,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:54:07,416 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:07,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 8 times [2020-12-01 14:54:07,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:07,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418469999] [2020-12-01 14:54:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:54:07,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:54:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:54:07,463 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:54:07,485 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:54:07,485 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 14:54:07,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 14:54:07,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:54:07 BoogieIcfgContainer [2020-12-01 14:54:07,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:54:07,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:54:07,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:54:07,531 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:54:07,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:02" (3/4) ... [2020-12-01 14:54:07,535 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 14:54:07,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:54:07,537 INFO L168 Benchmark]: Toolchain (without parser) took 5958.37 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 89.5 MB in the beginning and 98.8 MB in the end (delta: -9.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:07,538 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 37.7 MB in the beginning and 37.6 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:07,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.20 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 97.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:07,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.41 ms. Allocated memory is still 119.5 MB. Free memory was 97.0 MB in the beginning and 95.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:07,540 INFO L168 Benchmark]: Boogie Preprocessor took 22.89 ms. Allocated memory is still 119.5 MB. Free memory was 95.6 MB in the beginning and 94.6 MB in the end (delta: 993.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:07,540 INFO L168 Benchmark]: RCFGBuilder took 383.45 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 83.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:07,541 INFO L168 Benchmark]: TraceAbstraction took 5224.26 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 83.0 MB in the beginning and 98.8 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:07,541 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 144.7 MB. Free memory is still 98.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:07,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 37.7 MB in the beginning and 37.6 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.20 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 97.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.41 ms. Allocated memory is still 119.5 MB. Free memory was 97.0 MB in the beginning and 95.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.89 ms. Allocated memory is still 119.5 MB. Free memory was 95.6 MB in the beginning and 94.6 MB in the end (delta: 993.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 383.45 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 83.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5224.26 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 83.0 MB in the beginning and 98.8 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.55 ms. Allocated memory is still 144.7 MB. Free memory is still 98.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 24, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L16] unsigned char x; [L17] unsigned char y; [L18] unsigned char c; [L20] x = 37 [L21] y = 0 [L22] c = 0 [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND FALSE !(c < (unsigned char)8) [L7] COND TRUE !(cond) [L3] __assert_fail("0", "num_conversion_1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 142 SDslu, 636 SDs, 0 SdLazy, 619 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 88 SyntacticMatches, 21 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 25750 SizeOfPredicates, 7 NumberOfNonLiveVariables, 455 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/392 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-69874e2 [2020-12-01 14:54:10,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:54:10,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:54:10,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:54:10,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:54:10,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:54:10,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:54:10,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:54:10,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:54:10,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:54:10,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:54:10,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:54:10,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:54:10,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:54:10,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:54:10,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:54:10,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:54:10,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:54:10,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:54:10,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:54:10,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:54:10,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:54:10,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:54:10,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:54:10,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:54:10,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:54:10,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:54:10,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:54:10,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:54:10,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:54:10,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:54:10,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:54:10,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:54:10,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:54:10,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:54:10,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:54:10,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:54:10,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:54:10,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:54:10,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:54:10,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:54:10,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 14:54:10,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:54:10,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:54:10,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:54:10,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:54:10,397 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:54:10,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:54:10,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:54:10,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:54:10,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:54:10,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 14:54:10,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:54:10,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 14:54:10,400 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 14:54:10,401 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 14:54:10,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:54:10,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:54:10,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:54:10,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 14:54:10,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:54:10,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:54:10,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:54:10,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:54:10,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:54:10,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:54:10,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:54:10,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 14:54:10,404 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 14:54:10,405 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 14:54:10,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 14:54:10,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:54:10,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 14:54:10,406 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-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2020-12-01 14:54:10,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:54:10,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:54:10,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:54:10,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:54:10,994 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:54:10,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2020-12-01 14:54:11,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/data/20e90c82d/b7f7b4d0e51540b088ef500a7918036b/FLAGc74cd786e [2020-12-01 14:54:11,743 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:54:11,744 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/sv-benchmarks/c/bitvector/num_conversion_1.c [2020-12-01 14:54:11,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/data/20e90c82d/b7f7b4d0e51540b088ef500a7918036b/FLAGc74cd786e [2020-12-01 14:54:12,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/data/20e90c82d/b7f7b4d0e51540b088ef500a7918036b [2020-12-01 14:54:12,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:54:12,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:54:12,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:12,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:54:12,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:54:12,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f040992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12, skipping insertion in model container [2020-12-01 14:54:12,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:54:12,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:54:12,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:12,332 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:54:12,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:12,412 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:54:12,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12 WrapperNode [2020-12-01 14:54:12,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:12,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:12,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:54:12,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:54:12,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:12,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:54:12,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:54:12,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:54:12,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (1/1) ... [2020-12-01 14:54:12,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:54:12,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:54:12,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:54:12,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:54:12,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:54:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:54:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:54:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 14:54:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:54:12,961 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:54:12,976 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 14:54:12,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:12 BoogieIcfgContainer [2020-12-01 14:54:12,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:54:12,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:54:12,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:54:12,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:54:12,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:54:12" (1/3) ... [2020-12-01 14:54:12,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5548d665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:12, skipping insertion in model container [2020-12-01 14:54:12,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:12" (2/3) ... [2020-12-01 14:54:12,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5548d665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:12, skipping insertion in model container [2020-12-01 14:54:12,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:12" (3/3) ... [2020-12-01 14:54:12,987 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2020-12-01 14:54:13,014 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:54:13,018 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 14:54:13,068 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 14:54:13,100 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:54:13,102 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 14:54:13,103 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:54:13,103 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:54:13,103 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:54:13,103 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:54:13,103 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:54:13,104 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:54:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-01 14:54:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 14:54:13,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:13,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 14:54:13,132 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:13,140 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2020-12-01 14:54:13,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:54:13,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652113281] [2020-12-01 14:54:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 14:54:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:13,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 14:54:13,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:13,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:54:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:13,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652113281] [2020-12-01 14:54:13,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:13,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 14:54:13,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657534367] [2020-12-01 14:54:13,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 14:54:13,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:54:13,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 14:54:13,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:54:13,374 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-12-01 14:54:13,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:13,390 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-12-01 14:54:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 14:54:13,392 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-01 14:54:13,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:13,401 INFO L225 Difference]: With dead ends: 22 [2020-12-01 14:54:13,401 INFO L226 Difference]: Without dead ends: 9 [2020-12-01 14:54:13,404 INFO L677 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 [2020-12-01 14:54:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-01 14:54:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-01 14:54:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-01 14:54:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-01 14:54:13,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2020-12-01 14:54:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:13,447 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-01 14:54:13,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 14:54:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-01 14:54:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 14:54:13,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:13,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 14:54:13,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 14:54:13,661 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:13,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:13,662 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2020-12-01 14:54:13,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:54:13,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64167607] [2020-12-01 14:54:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 14:54:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:13,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 14:54:13,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:13,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:54:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:13,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64167607] [2020-12-01 14:54:13,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:13,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-01 14:54:13,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967858680] [2020-12-01 14:54:13,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:13,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:54:13,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:13,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:13,830 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2020-12-01 14:54:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:13,871 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-12-01 14:54:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:54:13,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-01 14:54:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:13,873 INFO L225 Difference]: With dead ends: 17 [2020-12-01 14:54:13,873 INFO L226 Difference]: Without dead ends: 13 [2020-12-01 14:54:13,874 INFO L677 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 [2020-12-01 14:54:13,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-01 14:54:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-01 14:54:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-01 14:54:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-12-01 14:54:13,883 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2020-12-01 14:54:13,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:13,883 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-12-01 14:54:13,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:13,884 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-01 14:54:13,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 14:54:13,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:13,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:14,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 14:54:14,101 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:14,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 1 times [2020-12-01 14:54:14,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:54:14,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959962896] [2020-12-01 14:54:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 14:54:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:14,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 14:54:14,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 14:54:14,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:54:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 14:54:14,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959962896] [2020-12-01 14:54:14,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:14,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 14:54:14,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120092254] [2020-12-01 14:54:14,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 14:54:14,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:54:14,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 14:54:14,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:54:14,283 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 6 states. [2020-12-01 14:54:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:14,340 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-12-01 14:54:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 14:54:14,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-01 14:54:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:14,342 INFO L225 Difference]: With dead ends: 28 [2020-12-01 14:54:14,342 INFO L226 Difference]: Without dead ends: 19 [2020-12-01 14:54:14,343 INFO L677 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 [2020-12-01 14:54:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-01 14:54:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2020-12-01 14:54:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-01 14:54:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-12-01 14:54:14,348 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2020-12-01 14:54:14,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:14,348 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-12-01 14:54:14,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 14:54:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-12-01 14:54:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 14:54:14,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:14,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:14,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 14:54:14,565 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:14,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1664855024, now seen corresponding path program 1 times [2020-12-01 14:54:14,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:54:14,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341002110] [2020-12-01 14:54:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-01 14:54:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:14,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 14:54:14,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:14,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:54:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:14,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341002110] [2020-12-01 14:54:14,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:14,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-01 14:54:14,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596637177] [2020-12-01 14:54:14,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 14:54:14,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:54:14,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 14:54:14,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 14:54:14,743 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2020-12-01 14:54:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:14,872 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-12-01 14:54:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 14:54:14,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-01 14:54:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:14,889 INFO L225 Difference]: With dead ends: 29 [2020-12-01 14:54:14,889 INFO L226 Difference]: Without dead ends: 25 [2020-12-01 14:54:14,890 INFO L677 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 [2020-12-01 14:54:14,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-01 14:54:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-01 14:54:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-01 14:54:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-12-01 14:54:14,898 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 12 [2020-12-01 14:54:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:14,898 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-12-01 14:54:14,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 14:54:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-12-01 14:54:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 14:54:14,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:14,900 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:15,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 14:54:15,118 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:15,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:15,118 INFO L82 PathProgramCache]: Analyzing trace with hash 2085526576, now seen corresponding path program 2 times [2020-12-01 14:54:15,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:54:15,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615935751] [2020-12-01 14:54:15,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-01 14:54:15,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 14:54:15,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:54:15,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 14:54:15,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 14:54:15,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:54:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 14:54:15,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615935751] [2020-12-01 14:54:15,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:15,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-01 14:54:15,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591206180] [2020-12-01 14:54:15,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 14:54:15,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:54:15,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 14:54:15,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-01 14:54:15,555 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 10 states. [2020-12-01 14:54:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:15,898 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-12-01 14:54:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-01 14:54:15,900 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-12-01 14:54:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:15,903 INFO L225 Difference]: With dead ends: 54 [2020-12-01 14:54:15,903 INFO L226 Difference]: Without dead ends: 39 [2020-12-01 14:54:15,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-12-01 14:54:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-01 14:54:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2020-12-01 14:54:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-01 14:54:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-12-01 14:54:15,919 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 24 [2020-12-01 14:54:15,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:15,919 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-12-01 14:54:15,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 14:54:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-12-01 14:54:15,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 14:54:15,920 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:15,920 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:16,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 14:54:16,121 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash -986835344, now seen corresponding path program 3 times [2020-12-01 14:54:16,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:54:16,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669148515] [2020-12-01 14:54:16,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-01 14:54:16,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-01 14:54:16,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:54:16,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 14:54:16,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-01 14:54:16,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:54:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-01 14:54:16,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669148515] [2020-12-01 14:54:16,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:16,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-01 14:54:16,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516729905] [2020-12-01 14:54:16,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 14:54:16,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:54:16,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 14:54:16,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-01 14:54:16,540 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 10 states. [2020-12-01 14:54:16,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:16,833 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-12-01 14:54:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 14:54:16,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-12-01 14:54:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:16,834 INFO L225 Difference]: With dead ends: 53 [2020-12-01 14:54:16,834 INFO L226 Difference]: Without dead ends: 31 [2020-12-01 14:54:16,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-12-01 14:54:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-01 14:54:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-01 14:54:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 14:54:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-12-01 14:54:16,843 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2020-12-01 14:54:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:16,843 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-12-01 14:54:16,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 14:54:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-12-01 14:54:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 14:54:16,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:16,845 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:17,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-01 14:54:17,052 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:17,052 INFO L82 PathProgramCache]: Analyzing trace with hash -29656432, now seen corresponding path program 4 times [2020-12-01 14:54:17,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:54:17,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652761357] [2020-12-01 14:54:17,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-01 14:54:17,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 14:54:17,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:54:17,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 14:54:17,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-01 14:54:17,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:54:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-01 14:54:18,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652761357] [2020-12-01 14:54:18,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 14:54:18,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2020-12-01 14:54:18,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430588897] [2020-12-01 14:54:18,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-01 14:54:18,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:54:18,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-01 14:54:18,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2020-12-01 14:54:18,180 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 28 states. [2020-12-01 14:54:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:19,283 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-12-01 14:54:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-01 14:54:19,285 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 30 [2020-12-01 14:54:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:19,286 INFO L225 Difference]: With dead ends: 53 [2020-12-01 14:54:19,286 INFO L226 Difference]: Without dead ends: 37 [2020-12-01 14:54:19,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2020-12-01 14:54:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-01 14:54:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-01 14:54:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-01 14:54:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-12-01 14:54:19,300 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2020-12-01 14:54:19,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:19,300 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-12-01 14:54:19,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-01 14:54:19,301 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-12-01 14:54:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 14:54:19,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:19,304 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:19,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-01 14:54:19,522 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:19,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:19,523 INFO L82 PathProgramCache]: Analyzing trace with hash -166593550, now seen corresponding path program 5 times [2020-12-01 14:54:19,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:54:19,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075532158] [2020-12-01 14:54:19,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-01 14:54:19,580 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-01 14:54:19,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:54:19,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 14:54:19,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:54:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 14:54:20,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:54:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 14:54:21,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075532158] [2020-12-01 14:54:21,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:21,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 18] imperfect sequences [] total 34 [2020-12-01 14:54:21,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238230139] [2020-12-01 14:54:21,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-01 14:54:21,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:54:21,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-01 14:54:21,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=746, Unknown=0, NotChecked=0, Total=1122 [2020-12-01 14:54:21,238 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 34 states. [2020-12-01 14:54:21,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:21,417 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-12-01 14:54:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-01 14:54:21,417 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 36 [2020-12-01 14:54:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:21,418 INFO L225 Difference]: With dead ends: 39 [2020-12-01 14:54:21,418 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 14:54:21,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=376, Invalid=746, Unknown=0, NotChecked=0, Total=1122 [2020-12-01 14:54:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 14:54:21,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 14:54:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 14:54:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 14:54:21,420 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-12-01 14:54:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:21,420 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:54:21,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-01 14:54:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 14:54:21,420 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 14:54:21,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-01 14:54:21,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 14:54:22,458 WARN L197 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 140 [2020-12-01 14:54:22,462 INFO L265 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-12-01 14:54:22,462 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 14:54:22,463 INFO L258 CegarLoopResult]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse14 ((_ zero_extend 24) ULTIMATE.start_main_~c~0))) (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse14 (_ bv1 32)))))) (let ((.cse16 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse17 (_ bv1 32)))))) (let ((.cse11 ((_ zero_extend 24) ULTIMATE.start_main_~x~0)) (.cse15 ((_ zero_extend 24) ULTIMATE.start_main_~y~0)) (.cse12 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse16))))) (let ((.cse2 (exists ((v_ULTIMATE.start_main_~c~0_28 (_ BitVec 8))) (let ((.cse25 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_28))) (and (= ((_ extract 7 0) (bvadd .cse25 (_ bv1 32))) ULTIMATE.start_main_~c~0) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv37 32) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse25)))))) (_ bv0 32))))))) (.cse0 (= (_ bv5 8) ULTIMATE.start_main_~y~0)) (.cse13 (or (bvslt .cse17 (_ bv8 32)) (= (_ bv0 32) ((_ zero_extend 24) ULTIMATE.start_main_~bit~0)))) (.cse3 (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse15 .cse12))))) (.cse10 (= (_ bv1 8) ULTIMATE.start_main_~y~0)) (.cse1 (= (_ bv37 8) ULTIMATE.start_main_~x~0))) (or (and .cse0 (= (_ bv4 8) ULTIMATE.start_main_~c~0) .cse1) (and .cse1 .cse2 .cse3 (exists ((v_ULTIMATE.start_main_~c~0_50 (_ BitVec 8))) (let ((.cse9 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_50))) (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse9 (_ bv1 32)))))) (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse6 (_ bv1 32)))))) (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 (_ bv1 32)))))) (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse4 (_ bv1 32)))))) (let ((.cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse7 (_ bv1 32)))))) (and (bvslt .cse4 (_ bv8 32)) (bvslt .cse5 (_ bv8 32)) (bvslt .cse6 (_ bv8 32)) (bvslt .cse7 (_ bv8 32)) (bvslt .cse8 (_ bv8 32)) (bvslt .cse9 (_ bv8 32)) (= ((_ extract 7 0) (bvadd .cse8 (_ bv1 32))) ULTIMATE.start_main_~c~0)))))))))) (and (= (_ bv2 8) ULTIMATE.start_main_~c~0) .cse1 .cse10) (and .cse0 (= (_ bv0 8) (bvadd ULTIMATE.start_main_~bit~0 (_ bv252 8))) .cse1 (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 .cse12))) (_ bv0 32))) .cse2) (and .cse13 (= ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse14))) .cse15))) .cse11) (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse16 (_ bv1 32)))) (_ bv1 32))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse17)))))))))) .cse1) (and .cse0 .cse1 (= (_ bv5 8) ULTIMATE.start_main_~c~0)) (and .cse13 (exists ((v_ULTIMATE.start_main_~c~0_50 (_ BitVec 8))) (let ((.cse24 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_50))) (let ((.cse20 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse24 (_ bv1 32)))))) (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse20 (_ bv1 32)))))) (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse19 (_ bv1 32)))))) (let ((.cse21 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse18 (_ bv1 32)))))) (let ((.cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse21 (_ bv1 32)))))) (let ((.cse23 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse22 (_ bv1 32)))))) (and (bvslt .cse18 (_ bv8 32)) (bvslt .cse19 (_ bv8 32)) (bvslt .cse20 (_ bv8 32)) (bvslt .cse21 (_ bv8 32)) (bvslt .cse22 (_ bv8 32)) (bvslt .cse23 (_ bv8 32)) (bvslt .cse24 (_ bv8 32)) (= ULTIMATE.start_main_~c~0 ((_ extract 7 0) (bvadd .cse23 (_ bv1 32))))))))))))) .cse1 .cse3) (and (= (_ bv0 8) (bvadd ULTIMATE.start_main_~bit~0 (_ bv255 8))) (= (_ bv1 8) ULTIMATE.start_main_~c~0) .cse1 .cse10) (and (= (_ bv0 8) ULTIMATE.start_main_~c~0) .cse1 (= (_ bv0 8) ULTIMATE.start_main_~y~0)))))))) [2020-12-01 14:54:22,464 INFO L262 CegarLoopResult]: For program point L23-3(lines 23 30) no Hoare annotation was computed. [2020-12-01 14:54:22,464 INFO L262 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-12-01 14:54:22,464 INFO L265 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-12-01 14:54:22,464 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-12-01 14:54:22,464 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 14:54:22,464 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 14:54:22,464 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 14:54:22,465 INFO L262 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-12-01 14:54:22,465 INFO L262 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-12-01 14:54:22,465 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 14:54:22,465 INFO L262 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-12-01 14:54:22,478 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,479 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,480 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,480 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,482 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,482 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,482 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,483 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,483 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,484 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,486 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,487 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,487 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,487 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,488 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,488 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,488 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,488 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,489 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,507 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,507 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,508 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,508 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,508 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,508 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,509 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,509 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,509 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,510 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,511 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,511 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,511 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,512 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,512 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,512 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,512 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,513 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,513 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:54:22 BoogieIcfgContainer [2020-12-01 14:54:22,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:54:22,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:54:22,522 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:54:22,522 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:54:22,523 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:12" (3/4) ... [2020-12-01 14:54:22,526 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 14:54:22,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-01 14:54:22,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 14:54:22,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 14:54:22,536 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 14:54:22,563 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((5bv8 == y && 4bv8 == c) && 37bv8 == x) || (((37bv8 == x && (\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32))) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~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_50 : bv8 :: (((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] == c))) || ((2bv8 == c && 37bv8 == x) && 1bv8 == y)) || ((((5bv8 == y && 0bv8 == ~bvadd64(bit, 252bv8)) && 37bv8 == x) && !(~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)) && (\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32)))) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]), ~zero_extendFrom8To32(y))[7:0]) == ~zero_extendFrom8To32(x)) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]))[7:0])) && 37bv8 == x)) || ((5bv8 == y && 37bv8 == x) && 5bv8 == c)) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: ((((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0])) && 37bv8 == x) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]))) || (((0bv8 == ~bvadd64(bit, 255bv8) && 1bv8 == c) && 37bv8 == x) && 1bv8 == y)) || ((0bv8 == c && 37bv8 == x) && 0bv8 == y) [2020-12-01 14:54:22,584 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e7861765-6572-4223-b9db-bfd856ee0431/bin/uautomizer/witness.graphml [2020-12-01 14:54:22,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:54:22,585 INFO L168 Benchmark]: Toolchain (without parser) took 10469.81 ms. Allocated memory was 56.6 MB in the beginning and 117.4 MB in the end (delta: 60.8 MB). Free memory was 35.9 MB in the beginning and 70.9 MB in the end (delta: -35.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:22,586 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 43.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:22,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.93 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 40.9 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:22,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.28 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 39.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:22,590 INFO L168 Benchmark]: Boogie Preprocessor took 53.51 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 38.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:22,593 INFO L168 Benchmark]: RCFGBuilder took 457.24 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 27.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:22,594 INFO L168 Benchmark]: TraceAbstraction took 9541.63 ms. Allocated memory was 56.6 MB in the beginning and 117.4 MB in the end (delta: 60.8 MB). Free memory was 26.6 MB in the beginning and 74.0 MB in the end (delta: -47.4 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:22,594 INFO L168 Benchmark]: Witness Printer took 62.41 ms. Allocated memory is still 117.4 MB. Free memory was 74.0 MB in the beginning and 70.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:22,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 43.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.93 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 40.9 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.28 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 39.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.51 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 38.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 457.24 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 27.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9541.63 ms. Allocated memory was 56.6 MB in the beginning and 117.4 MB in the end (delta: 60.8 MB). Free memory was 26.6 MB in the beginning and 74.0 MB in the end (delta: -47.4 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.1 GB. * Witness Printer took 62.41 ms. Allocated memory is still 117.4 MB. Free memory was 74.0 MB in the beginning and 70.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant [2020-12-01 14:54:22,609 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,610 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,610 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,610 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,610 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,610 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,611 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,611 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,611 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,611 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,612 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,612 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,612 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,612 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,613 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,613 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,613 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,613 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,614 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,618 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,620 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,621 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,625 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-12-01 14:54:22,625 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,625 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,625 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-12-01 14:54:22,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] Derived loop invariant: (((((((((5bv8 == y && 4bv8 == c) && 37bv8 == x) || (((37bv8 == x && (\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32))) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~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_50 : bv8 :: (((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] == c))) || ((2bv8 == c && 37bv8 == x) && 1bv8 == y)) || ((((5bv8 == y && 0bv8 == ~bvadd64(bit, 252bv8)) && 37bv8 == x) && !(~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)) && (\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32)))) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]), ~zero_extendFrom8To32(y))[7:0]) == ~zero_extendFrom8To32(x)) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]))[7:0])) && 37bv8 == x)) || ((5bv8 == y && 37bv8 == x) && 5bv8 == c)) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: ((((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0])) && 37bv8 == x) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]))) || (((0bv8 == ~bvadd64(bit, 255bv8) && 1bv8 == c) && 37bv8 == x) && 1bv8 == y)) || ((0bv8 == c && 37bv8 == x) && 0bv8 == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.5s, OverallIterations: 8, TraceHistogramMax: 10, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 143 SDslu, 316 SDs, 0 SdLazy, 697 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=7, 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, 8 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 533 HoareAnnotationTreeSize, 3 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 671 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 150 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 284 ConstructedInterpolants, 39 QuantifiedInterpolants, 129955 SizeOfPredicates, 24 NumberOfNonLiveVariables, 361 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 472/698 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 proved your program to be correct! Received shutdown request...