./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 505914a72b8dea9b52e2cb3478aa86049fe70f2b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:15:50,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:15:50,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:15:50,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:15:50,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:15:50,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:15:50,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:15:50,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:15:50,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:15:50,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:15:50,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:15:50,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:15:50,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:15:50,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:15:50,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:15:50,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:15:50,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:15:50,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:15:50,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:15:50,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:15:50,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:15:50,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:15:50,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:15:50,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:15:50,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:15:50,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:15:50,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:15:50,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:15:50,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:15:50,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:15:50,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:15:50,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:15:50,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:15:50,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:15:50,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:15:50,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:15:50,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:15:50,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:15:50,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:15:50,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:15:50,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:15:50,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:15:50,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:15:50,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:15:50,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:15:50,228 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:15:50,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:15:50,229 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:15:50,229 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:15:50,229 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:15:50,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:15:50,232 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:15:50,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:15:50,233 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:15:50,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:15:50,233 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:15:50,233 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:15:50,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:15:50,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:15:50,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:15:50,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:15:50,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:15:50,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:15:50,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:15:50,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:15:50,234 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:15:50,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:15:50,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:15:50,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:15:50,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:15:50,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:15:50,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:15:50,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:15:50,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:15:50,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:15:50,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:15:50,236 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:15:50,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:15:50,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:15:50,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:15:50,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:15:50,237 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 505914a72b8dea9b52e2cb3478aa86049fe70f2b [2020-12-09 06:15:50,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:15:50,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:15:50,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:15:50,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:15:50,414 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:15:50,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c [2020-12-09 06:15:50,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/data/b6bc44f96/8d01e9e5bdf84de58ffaf4a16481c817/FLAGccd5e4e93 [2020-12-09 06:15:50,830 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:15:50,830 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c [2020-12-09 06:15:50,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/data/b6bc44f96/8d01e9e5bdf84de58ffaf4a16481c817/FLAGccd5e4e93 [2020-12-09 06:15:51,246 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/data/b6bc44f96/8d01e9e5bdf84de58ffaf4a16481c817 [2020-12-09 06:15:51,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:15:51,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:15:51,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:15:51,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:15:51,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:15:51,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411c69f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51, skipping insertion in model container [2020-12-09 06:15:51,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:15:51,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:15:51,375 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c[538,551] [2020-12-09 06:15:51,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:15:51,397 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:15:51,406 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c[538,551] [2020-12-09 06:15:51,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:15:51,425 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:15:51,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51 WrapperNode [2020-12-09 06:15:51,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:15:51,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:15:51,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:15:51,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:15:51,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:15:51,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:15:51,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:15:51,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:15:51,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (1/1) ... [2020-12-09 06:15:51,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:15:51,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:15:51,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:15:51,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:15:51,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/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 [2020-12-09 06:15:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:15:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:15:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:15:51,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:15:51,833 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:15:51,833 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-09 06:15:51,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:15:51 BoogieIcfgContainer [2020-12-09 06:15:51,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:15:51,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:15:51,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:15:51,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:15:51,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:15:51" (1/3) ... [2020-12-09 06:15:51,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25820d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:15:51, skipping insertion in model container [2020-12-09 06:15:51,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:51" (2/3) ... [2020-12-09 06:15:51,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25820d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:15:51, skipping insertion in model container [2020-12-09 06:15:51,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:15:51" (3/3) ... [2020-12-09 06:15:51,843 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound2.c [2020-12-09 06:15:51,856 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:15:51,860 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-09 06:15:51,870 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-09 06:15:51,892 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:15:51,892 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:15:51,892 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:15:51,892 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:15:51,892 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:15:51,892 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:15:51,892 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:15:51,892 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:15:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-12-09 06:15:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 06:15:51,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:15:51,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 06:15:51,907 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:15:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:15:51,911 INFO L82 PathProgramCache]: Analyzing trace with hash 155587567, now seen corresponding path program 1 times [2020-12-09 06:15:51,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:15:51,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327871931] [2020-12-09 06:15:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:15:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:15:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:15:52,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327871931] [2020-12-09 06:15:52,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:15:52,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:15:52,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817004322] [2020-12-09 06:15:52,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:15:52,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:15:52,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:15:52,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:15:52,081 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-12-09 06:15:52,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:15:52,143 INFO L93 Difference]: Finished difference Result 92 states and 126 transitions. [2020-12-09 06:15:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:15:52,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 06:15:52,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:15:52,150 INFO L225 Difference]: With dead ends: 92 [2020-12-09 06:15:52,150 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 06:15:52,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:15:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 06:15:52,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2020-12-09 06:15:52,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 06:15:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-12-09 06:15:52,176 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2020-12-09 06:15:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:15:52,176 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-12-09 06:15:52,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:15:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-12-09 06:15:52,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:15:52,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:15:52,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:15:52,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:15:52,177 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:15:52,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:15:52,178 INFO L82 PathProgramCache]: Analyzing trace with hash -804784526, now seen corresponding path program 1 times [2020-12-09 06:15:52,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:15:52,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530197921] [2020-12-09 06:15:52,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:15:52,190 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:15:52,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723637207] [2020-12-09 06:15:52,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/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 [2020-12-09 06:15:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:15:52,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:15:52,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:15:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:15:52,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:15:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:15:52,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530197921] [2020-12-09 06:15:52,296 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:15:52,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723637207] [2020-12-09 06:15:52,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:15:52,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 06:15:52,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504912450] [2020-12-09 06:15:52,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:15:52,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:15:52,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:15:52,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:15:52,298 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-12-09 06:15:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:15:52,322 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-12-09 06:15:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:15:52,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-09 06:15:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:15:52,323 INFO L225 Difference]: With dead ends: 64 [2020-12-09 06:15:52,323 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 06:15:52,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:15:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 06:15:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-12-09 06:15:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-09 06:15:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-12-09 06:15:52,330 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 7 [2020-12-09 06:15:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:15:52,330 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-12-09 06:15:52,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:15:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-12-09 06:15:52,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:15:52,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:15:52,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:15:52,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 06:15:52,533 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:15:52,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:15:52,535 INFO L82 PathProgramCache]: Analyzing trace with hash -804047694, now seen corresponding path program 1 times [2020-12-09 06:15:52,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:15:52,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640611572] [2020-12-09 06:15:52,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:15:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:15:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:15:52,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640611572] [2020-12-09 06:15:52,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:15:52,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:15:52,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317268149] [2020-12-09 06:15:52,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:15:52,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:15:52,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:15:52,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:15:52,686 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2020-12-09 06:15:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:15:52,743 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-12-09 06:15:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:15:52,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 06:15:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:15:52,745 INFO L225 Difference]: With dead ends: 59 [2020-12-09 06:15:52,745 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 06:15:52,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:15:52,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 06:15:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-12-09 06:15:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 06:15:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-12-09 06:15:52,751 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 7 [2020-12-09 06:15:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:15:52,752 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-12-09 06:15:52,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:15:52,752 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-12-09 06:15:52,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:15:52,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:15:52,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:15:52,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:15:52,752 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:15:52,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:15:52,753 INFO L82 PathProgramCache]: Analyzing trace with hash 404435477, now seen corresponding path program 1 times [2020-12-09 06:15:52,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:15:52,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402939014] [2020-12-09 06:15:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:15:52,763 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:15:52,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085078144] [2020-12-09 06:15:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/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 [2020-12-09 06:15:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:15:52,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 06:15:52,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:15:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:15:52,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:15:52,886 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:15:52,887 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:15:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:15:52,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402939014] [2020-12-09 06:15:52,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:15:52,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085078144] [2020-12-09 06:15:52,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:15:52,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 06:15:52,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543943002] [2020-12-09 06:15:52,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 06:15:52,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:15:52,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 06:15:52,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:15:52,906 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 10 states. [2020-12-09 06:15:57,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:15:57,135 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2020-12-09 06:15:57,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 06:15:57,136 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-12-09 06:15:57,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:15:57,137 INFO L225 Difference]: With dead ends: 97 [2020-12-09 06:15:57,137 INFO L226 Difference]: Without dead ends: 73 [2020-12-09 06:15:57,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-12-09 06:15:57,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-09 06:15:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 50. [2020-12-09 06:15:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 06:15:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-09 06:15:57,144 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 9 [2020-12-09 06:15:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:15:57,145 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-09 06:15:57,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 06:15:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-09 06:15:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 06:15:57,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:15:57,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:15:57,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:15:57,347 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:15:57,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:15:57,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1567670847, now seen corresponding path program 1 times [2020-12-09 06:15:57,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:15:57,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103455647] [2020-12-09 06:15:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:15:57,361 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:15:57,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400191] [2020-12-09 06:15:57,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/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 [2020-12-09 06:15:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:15:57,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-09 06:15:57,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:15:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:15:57,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:15:57,474 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:15:57,474 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:15:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:15:57,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103455647] [2020-12-09 06:15:57,488 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:15:57,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400191] [2020-12-09 06:15:57,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:15:57,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2020-12-09 06:15:57,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159117806] [2020-12-09 06:15:57,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 06:15:57,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:15:57,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 06:15:57,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 06:15:57,490 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 9 states. [2020-12-09 06:15:57,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:15:57,612 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-12-09 06:15:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 06:15:57,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-09 06:15:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:15:57,613 INFO L225 Difference]: With dead ends: 65 [2020-12-09 06:15:57,613 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 06:15:57,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-12-09 06:15:57,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 06:15:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-12-09 06:15:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-09 06:15:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-12-09 06:15:57,623 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 13 [2020-12-09 06:15:57,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:15:57,624 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-12-09 06:15:57,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 06:15:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-12-09 06:15:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 06:15:57,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:15:57,625 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:15:57,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:15:57,826 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:15:57,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:15:57,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1802737760, now seen corresponding path program 1 times [2020-12-09 06:15:57,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:15:57,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403115703] [2020-12-09 06:15:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:15:57,846 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:15:57,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043605537] [2020-12-09 06:15:57,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/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 [2020-12-09 06:15:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:15:57,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:15:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:15:57,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:15:57,930 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 06:15:57,930 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:15:58,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:15:58,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:15:58 BoogieIcfgContainer [2020-12-09 06:15:58,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:15:58,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:15:58,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:15:58,156 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:15:58,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:15:51" (3/4) ... [2020-12-09 06:15:58,158 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 06:15:58,190 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_17cf4b7d-a9a5-4089-b304-e73bed629f86/bin/utaipan/witness.graphml [2020-12-09 06:15:58,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:15:58,192 INFO L168 Benchmark]: Toolchain (without parser) took 6942.15 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 72.4 MB in the beginning and 69.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:15:58,193 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:15:58,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.57 ms. Allocated memory is still 94.4 MB. Free memory was 72.1 MB in the beginning and 67.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:15:58,194 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.71 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 66.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:15:58,194 INFO L168 Benchmark]: Boogie Preprocessor took 21.66 ms. Allocated memory is still 94.4 MB. Free memory was 66.3 MB in the beginning and 65.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:15:58,194 INFO L168 Benchmark]: RCFGBuilder took 354.45 ms. Allocated memory is still 94.4 MB. Free memory was 65.0 MB in the beginning and 68.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:15:58,195 INFO L168 Benchmark]: TraceAbstraction took 6318.80 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 67.5 MB in the beginning and 72.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:15:58,195 INFO L168 Benchmark]: Witness Printer took 34.81 ms. Allocated memory is still 113.2 MB. Free memory was 72.3 MB in the beginning and 69.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:15:58,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 175.57 ms. Allocated memory is still 94.4 MB. Free memory was 72.1 MB in the beginning and 67.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.71 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 66.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.66 ms. Allocated memory is still 94.4 MB. Free memory was 66.3 MB in the beginning and 65.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 354.45 ms. Allocated memory is still 94.4 MB. Free memory was 65.0 MB in the beginning and 68.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6318.80 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 67.5 MB in the beginning and 72.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Witness Printer took 34.81 ms. Allocated memory is still 113.2 MB. Free memory was 72.3 MB in the beginning and 69.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND TRUE !(r >= d) VAL [counter=2] [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 264 SDslu, 228 SDs, 0 SdLazy, 189 SolverSat, 131 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, 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, 5 MinimizatonAttempts, 75 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 4746 SizeOfPredicates, 16 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...