./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash efd11941ceab8dc56d9aa56f1950f714738654ba .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 14:06:11,169 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:06:11,170 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:06:11,178 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:06:11,179 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:06:11,179 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:06:11,180 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:06:11,181 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:06:11,182 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:06:11,183 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:06:11,184 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:06:11,184 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:06:11,185 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:06:11,185 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:06:11,186 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:06:11,187 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:06:11,187 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:06:11,189 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:06:11,190 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:06:11,191 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:06:11,192 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:06:11,193 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:06:11,195 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:06:11,195 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:06:11,195 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:06:11,196 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:06:11,197 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:06:11,197 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:06:11,198 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:06:11,199 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:06:11,199 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:06:11,199 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:06:11,200 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:06:11,200 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:06:11,200 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:06:11,201 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:06:11,201 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 14:06:11,212 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:06:11,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:06:11,213 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:06:11,213 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 14:06:11,214 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:06:11,214 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:06:11,214 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:06:11,214 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:06:11,214 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:06:11,214 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:06:11,215 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:06:11,215 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:06:11,215 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:06:11,215 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:06:11,215 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:06:11,215 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:06:11,216 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:06:11,216 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:06:11,216 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:06:11,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:06:11,216 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:06:11,216 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:06:11,217 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:06:11,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:06:11,217 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:06:11,217 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:06:11,217 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:06:11,217 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 14:06:11,218 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:06:11,218 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:06:11,218 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/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(__VERIFIER_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 -> efd11941ceab8dc56d9aa56f1950f714738654ba [2018-11-18 14:06:11,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:06:11,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:06:11,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:06:11,253 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:06:11,253 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:06:11,254 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c [2018-11-18 14:06:11,290 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/data/8b1607303/21c68a4ffbe74685a0229ecf12c26c66/FLAG50ee86d3e [2018-11-18 14:06:11,687 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:06:11,687 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c [2018-11-18 14:06:11,691 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/data/8b1607303/21c68a4ffbe74685a0229ecf12c26c66/FLAG50ee86d3e [2018-11-18 14:06:11,700 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/data/8b1607303/21c68a4ffbe74685a0229ecf12c26c66 [2018-11-18 14:06:11,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:06:11,704 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 14:06:11,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:06:11,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:06:11,707 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:06:11,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:06:11" (1/1) ... [2018-11-18 14:06:11,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e791d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11, skipping insertion in model container [2018-11-18 14:06:11,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:06:11" (1/1) ... [2018-11-18 14:06:11,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:06:11,731 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:06:11,832 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:06:11,838 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:06:11,852 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:06:11,862 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:06:11,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11 WrapperNode [2018-11-18 14:06:11,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:06:11,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:06:11,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:06:11,863 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:06:11,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11" (1/1) ... [2018-11-18 14:06:11,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11" (1/1) ... [2018-11-18 14:06:11,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11" (1/1) ... [2018-11-18 14:06:11,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11" (1/1) ... [2018-11-18 14:06:11,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11" (1/1) ... [2018-11-18 14:06:11,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11" (1/1) ... [2018-11-18 14:06:11,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11" (1/1) ... [2018-11-18 14:06:11,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:06:11,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:06:11,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:06:11,888 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:06:11,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/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 [2018-11-18 14:06:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:06:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:06:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2018-11-18 14:06:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2018-11-18 14:06:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-11-18 14:06:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:06:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 14:06:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 14:06:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-11-18 14:06:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure init [2018-11-18 14:06:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 14:06:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2018-11-18 14:06:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-11-18 14:06:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 14:06:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:06:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:06:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 14:06:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 14:06:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:06:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 14:06:12,169 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:06:12,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:06:12 BoogieIcfgContainer [2018-11-18 14:06:12,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:06:12,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:06:12,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:06:12,174 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:06:12,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:06:11" (1/3) ... [2018-11-18 14:06:12,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f8aff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:06:12, skipping insertion in model container [2018-11-18 14:06:12,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:11" (2/3) ... [2018-11-18 14:06:12,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f8aff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:06:12, skipping insertion in model container [2018-11-18 14:06:12,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:06:12" (3/3) ... [2018-11-18 14:06:12,176 INFO L112 eAbstractionObserver]: Analyzing ICFG test22_true-unreach-call.c [2018-11-18 14:06:12,186 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:06:12,192 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:06:12,205 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:06:12,231 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:06:12,232 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:06:12,232 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:06:12,232 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:06:12,232 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:06:12,233 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:06:12,233 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:06:12,233 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:06:12,233 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:06:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-18 14:06:12,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 14:06:12,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:06:12,253 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:06:12,255 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:06:12,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:12,258 INFO L82 PathProgramCache]: Analyzing trace with hash 379541984, now seen corresponding path program 1 times [2018-11-18 14:06:12,259 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:12,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:12,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:12,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:12,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 14:06:12,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:06:12,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:06:12,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:06:12,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:06:12,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:06:12,425 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-18 14:06:12,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:06:12,438 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2018-11-18 14:06:12,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:06:12,439 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2018-11-18 14:06:12,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:06:12,444 INFO L225 Difference]: With dead ends: 50 [2018-11-18 14:06:12,444 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 14:06:12,446 INFO L604 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 [2018-11-18 14:06:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 14:06:12,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-18 14:06:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 14:06:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-18 14:06:12,474 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 37 [2018-11-18 14:06:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:06:12,475 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-18 14:06:12,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:06:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-11-18 14:06:12,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 14:06:12,477 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:06:12,477 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:06:12,478 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:06:12,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:12,478 INFO L82 PathProgramCache]: Analyzing trace with hash -144615034, now seen corresponding path program 1 times [2018-11-18 14:06:12,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:12,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:12,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:12,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:12,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 14:06:12,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:06:12,717 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:06:12,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:12,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:12,958 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-18 14:06:12,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 14:06:12,964 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:06:12,988 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:06:12,997 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-18 14:06:12,999 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 14:06:12,999 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 14:06:13,006 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:06:13,012 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:06:13,012 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:43, output treesize:5 [2018-11-18 14:06:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 14:06:13,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 14:06:13,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2018-11-18 14:06:13,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 14:06:13,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 14:06:13,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-11-18 14:06:13,038 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 13 states. [2018-11-18 14:06:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:06:13,491 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2018-11-18 14:06:13,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 14:06:13,492 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2018-11-18 14:06:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:06:13,494 INFO L225 Difference]: With dead ends: 71 [2018-11-18 14:06:13,494 INFO L226 Difference]: Without dead ends: 63 [2018-11-18 14:06:13,495 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2018-11-18 14:06:13,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-18 14:06:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2018-11-18 14:06:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 14:06:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2018-11-18 14:06:13,504 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 39 [2018-11-18 14:06:13,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:06:13,504 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2018-11-18 14:06:13,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 14:06:13,504 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2018-11-18 14:06:13,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 14:06:13,505 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:06:13,505 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:06:13,505 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:06:13,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:13,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1342637780, now seen corresponding path program 1 times [2018-11-18 14:06:13,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:13,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:13,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:13,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:13,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 14:06:13,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:06:13,650 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:06:13,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:13,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:13,789 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-18 14:06:13,791 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 14:06:13,791 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:06:13,794 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:06:13,802 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-18 14:06:13,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 14:06:13,804 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 14:06:13,806 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:06:13,811 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:06:13,811 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:43, output treesize:5 [2018-11-18 14:06:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 14:06:13,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:06:13,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 16 [2018-11-18 14:06:13,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 14:06:13,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 14:06:13,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2018-11-18 14:06:13,830 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 16 states. [2018-11-18 14:06:14,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:06:14,228 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2018-11-18 14:06:14,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 14:06:14,229 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-11-18 14:06:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:06:14,230 INFO L225 Difference]: With dead ends: 77 [2018-11-18 14:06:14,230 INFO L226 Difference]: Without dead ends: 69 [2018-11-18 14:06:14,231 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2018-11-18 14:06:14,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-18 14:06:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 38. [2018-11-18 14:06:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 14:06:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-18 14:06:14,236 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 42 [2018-11-18 14:06:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:06:14,236 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-18 14:06:14,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 14:06:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-18 14:06:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 14:06:14,237 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:06:14,238 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:06:14,238 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:06:14,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:14,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1208594118, now seen corresponding path program 2 times [2018-11-18 14:06:14,238 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:14,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:14,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:14,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:14,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 14:06:14,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:06:14,389 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:06:14,394 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 14:06:14,426 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 14:06:14,426 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:06:14,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:14,584 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-18 14:06:14,585 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 14:06:14,586 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 14:06:14,589 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:06:14,597 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-18 14:06:14,601 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 14:06:14,601 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 14:06:14,604 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:06:14,610 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 14:06:14,610 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:43, output treesize:5 [2018-11-18 14:06:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 14:06:14,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:06:14,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2018-11-18 14:06:14,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-18 14:06:14,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-18 14:06:14,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2018-11-18 14:06:14,630 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 22 states. [2018-11-18 14:06:15,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:06:15,109 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2018-11-18 14:06:15,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-18 14:06:15,110 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2018-11-18 14:06:15,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:06:15,111 INFO L225 Difference]: With dead ends: 83 [2018-11-18 14:06:15,111 INFO L226 Difference]: Without dead ends: 75 [2018-11-18 14:06:15,112 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=260, Invalid=1222, Unknown=0, NotChecked=0, Total=1482 [2018-11-18 14:06:15,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-18 14:06:15,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 41. [2018-11-18 14:06:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 14:06:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-11-18 14:06:15,119 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 45 [2018-11-18 14:06:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:06:15,119 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-11-18 14:06:15,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-18 14:06:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-11-18 14:06:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 14:06:15,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:06:15,120 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:06:15,120 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:06:15,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:15,121 INFO L82 PathProgramCache]: Analyzing trace with hash -2061522540, now seen corresponding path program 3 times [2018-11-18 14:06:15,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:15,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:15,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:15,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:15,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 14:06:15,284 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:06:15,284 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:06:15,291 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 14:06:15,310 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-18 14:06:15,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:06:15,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-18 14:06:15,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:06:15,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2018-11-18 14:06:15,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-18 14:06:15,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-18 14:06:15,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2018-11-18 14:06:15,563 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 23 states. [2018-11-18 14:06:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:06:16,628 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2018-11-18 14:06:16,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-18 14:06:16,629 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 48 [2018-11-18 14:06:16,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:06:16,629 INFO L225 Difference]: With dead ends: 85 [2018-11-18 14:06:16,629 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 14:06:16,630 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=463, Invalid=2189, Unknown=0, NotChecked=0, Total=2652 [2018-11-18 14:06:16,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 14:06:16,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 14:06:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 14:06:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 14:06:16,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2018-11-18 14:06:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:06:16,632 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:06:16,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-18 14:06:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 14:06:16,633 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 14:06:16,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 14:06:16,835 INFO L425 ceAbstractionStarter]: For program point initEXIT(lines 11 18) no Hoare annotation was computed. [2018-11-18 14:06:16,835 INFO L428 ceAbstractionStarter]: At program point initENTRY(lines 11 18) the Hoare annotation is: true [2018-11-18 14:06:16,835 INFO L425 ceAbstractionStarter]: For program point initFINAL(lines 11 18) no Hoare annotation was computed. [2018-11-18 14:06:16,835 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 14:06:16,835 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 14:06:16,835 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 14:06:16,835 INFO L425 ceAbstractionStarter]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed. [2018-11-18 14:06:16,835 INFO L428 ceAbstractionStarter]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2018-11-18 14:06:16,835 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-18 14:06:16,836 INFO L425 ceAbstractionStarter]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed. [2018-11-18 14:06:16,836 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 14:06:16,836 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 14:06:16,836 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 14:06:16,836 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 14:06:16,836 INFO L425 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-11-18 14:06:16,836 INFO L425 ceAbstractionStarter]: For program point L35-2(lines 35 44) no Hoare annotation was computed. [2018-11-18 14:06:16,836 INFO L428 ceAbstractionStarter]: At program point L33-1(line 33) the Hoare annotation is: true [2018-11-18 14:06:16,836 INFO L425 ceAbstractionStarter]: For program point L33-2(line 33) no Hoare annotation was computed. [2018-11-18 14:06:16,836 INFO L425 ceAbstractionStarter]: For program point L35-4(lines 35 44) no Hoare annotation was computed. [2018-11-18 14:06:16,836 INFO L428 ceAbstractionStarter]: At program point L33-3(line 33) the Hoare annotation is: true [2018-11-18 14:06:16,836 INFO L425 ceAbstractionStarter]: For program point L33-4(line 33) no Hoare annotation was computed. [2018-11-18 14:06:16,836 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 30 50) no Hoare annotation was computed. [2018-11-18 14:06:16,836 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 30 50) no Hoare annotation was computed. [2018-11-18 14:06:16,837 INFO L421 ceAbstractionStarter]: At program point L42(lines 31 50) the Hoare annotation is: false [2018-11-18 14:06:16,837 INFO L425 ceAbstractionStarter]: For program point L38-1(lines 38 40) no Hoare annotation was computed. [2018-11-18 14:06:16,837 INFO L425 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-11-18 14:06:16,837 INFO L421 ceAbstractionStarter]: At program point L38-4(lines 38 40) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pa~0.offset) (= main_~pd2~0.offset main_~pd1~0.offset) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~pd2~0.base main_~pa~0.base) (= main_~pd2~0.base main_~pd1~0.base) (or (not (= 0 main_~pd1~0.base)) (not (= main_~pd1~0.offset 0)))) [2018-11-18 14:06:16,837 INFO L421 ceAbstractionStarter]: At program point L38-5(lines 38 40) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pd2~0.base) main_~pd2~0.offset))) (and (= main_~pd2~0.offset main_~pa~0.offset) (= main_~pd2~0.offset main_~pd1~0.offset) (<= main_~i~0 .cse0) (<= .cse0 main_~i~0) (= main_~pd2~0.base main_~pa~0.base) (= main_~pd2~0.base main_~pd1~0.base) (or (not (= 0 main_~pd1~0.base)) (not (= main_~pd1~0.offset 0))))) [2018-11-18 14:06:16,837 INFO L428 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: true [2018-11-18 14:06:16,837 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 30 50) the Hoare annotation is: true [2018-11-18 14:06:16,837 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2018-11-18 14:06:16,837 INFO L425 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-11-18 14:06:16,838 INFO L425 ceAbstractionStarter]: For program point L41-1(lines 41 43) no Hoare annotation was computed. [2018-11-18 14:06:16,838 INFO L425 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-11-18 14:06:16,838 INFO L428 ceAbstractionStarter]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2018-11-18 14:06:16,838 INFO L425 ceAbstractionStarter]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed. [2018-11-18 14:06:16,838 INFO L425 ceAbstractionStarter]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed. [2018-11-18 14:06:16,845 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 14:06:16,850 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 14:06:16,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:06:16 BoogieIcfgContainer [2018-11-18 14:06:16,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:06:16,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:06:16,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:06:16,852 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:06:16,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:06:12" (3/4) ... [2018-11-18 14:06:16,855 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 14:06:16,861 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure init [2018-11-18 14:06:16,861 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 14:06:16,861 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2018-11-18 14:06:16,861 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 14:06:16,861 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2018-11-18 14:06:16,865 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-11-18 14:06:16,865 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 14:06:16,865 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 14:06:16,866 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 14:06:16,908 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5e9697e4-fdc6-4ff4-81f4-2f17ccb231c1/bin-2019/uautomizer/witness.graphml [2018-11-18 14:06:16,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:06:16,909 INFO L168 Benchmark]: Toolchain (without parser) took 5205.68 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 304.1 MB). Free memory was 959.2 MB in the beginning and 962.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 300.6 MB. Max. memory is 11.5 GB. [2018-11-18 14:06:16,910 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:06:16,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.40 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 14:06:16,911 INFO L168 Benchmark]: Boogie Preprocessor took 24.94 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:06:16,911 INFO L168 Benchmark]: RCFGBuilder took 282.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-11-18 14:06:16,912 INFO L168 Benchmark]: TraceAbstraction took 4680.91 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 151.0 MB). Free memory was 1.1 GB in the beginning and 962.7 MB in the end (delta: 167.0 MB). Peak memory consumption was 317.9 MB. Max. memory is 11.5 GB. [2018-11-18 14:06:16,912 INFO L168 Benchmark]: Witness Printer took 56.07 ms. Allocated memory is still 1.3 GB. Free memory is still 962.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:06:16,913 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 158.40 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.94 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 282.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4680.91 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 151.0 MB). Free memory was 1.1 GB in the beginning and 962.7 MB in the end (delta: 167.0 MB). Peak memory consumption was 317.9 MB. Max. memory is 11.5 GB. * Witness Printer took 56.07 ms. Allocated memory is still 1.3 GB. Free memory is still 962.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 38]: Loop Invariant [2018-11-18 14:06:16,918 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 14:06:16,918 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((pd2 == pa && pd2 == pd1) && i <= unknown-#memory_int-unknown[pa][pa]) && pd2 == pa) && pd2 == pd1) && (!(0 == pd1) || !(pd1 == 0)) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 4.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 156 SDtfs, 234 SDslu, 1214 SDs, 0 SdLazy, 1207 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 159 SyntacticMatches, 12 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 93 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 24 PreInvPairs, 38 NumberOfFragments, 76 HoareAnnotationTreeSize, 24 FomulaSimplifications, 3672 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 653 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 385 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 76134 SizeOfPredicates, 37 NumberOfNonLiveVariables, 707 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 93/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...