./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2af97cd1d0200c0dff6df008e1ae10eecdfc76e4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 09:05:23,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 09:05:23,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 09:05:23,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 09:05:23,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 09:05:23,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 09:05:23,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 09:05:23,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 09:05:23,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 09:05:23,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 09:05:23,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 09:05:23,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 09:05:23,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 09:05:23,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 09:05:23,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 09:05:23,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 09:05:23,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 09:05:23,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 09:05:23,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 09:05:23,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 09:05:23,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 09:05:23,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 09:05:23,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 09:05:23,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 09:05:23,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 09:05:23,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 09:05:23,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 09:05:23,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 09:05:23,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 09:05:23,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 09:05:23,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 09:05:23,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 09:05:23,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 09:05:23,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 09:05:23,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 09:05:23,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 09:05:23,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 09:05:23,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 09:05:23,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 09:05:23,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 09:05:23,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 09:05:23,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 09:05:23,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 09:05:23,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 09:05:23,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 09:05:23,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 09:05:23,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 09:05:23,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 09:05:23,244 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 09:05:23,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 09:05:23,245 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 09:05:23,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 09:05:23,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 09:05:23,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 09:05:23,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 09:05:23,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 09:05:23,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 09:05:23,246 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 09:05:23,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 09:05:23,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 09:05:23,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 09:05:23,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 09:05:23,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 09:05:23,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 09:05:23,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:05:23,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 09:05:23,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 09:05:23,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 09:05:23,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 09:05:23,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 09:05:23,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 09:05:23,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 09:05:23,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2af97cd1d0200c0dff6df008e1ae10eecdfc76e4 [2021-08-29 09:05:23,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 09:05:23,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 09:05:23,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 09:05:23,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 09:05:23,612 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 09:05:23,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2021-08-29 09:05:23,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6995de3fd/1b6a96aa8eee4a9983f1777153011b88/FLAG5d5ab9f5e [2021-08-29 09:05:24,117 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 09:05:24,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2021-08-29 09:05:24,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6995de3fd/1b6a96aa8eee4a9983f1777153011b88/FLAG5d5ab9f5e [2021-08-29 09:05:24,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6995de3fd/1b6a96aa8eee4a9983f1777153011b88 [2021-08-29 09:05:24,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 09:05:24,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 09:05:24,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 09:05:24,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 09:05:24,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 09:05:24,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:24,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26eb946e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24, skipping insertion in model container [2021-08-29 09:05:24,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:24,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 09:05:24,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 09:05:24,675 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i[296,309] [2021-08-29 09:05:24,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:05:24,850 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 09:05:24,861 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i[296,309] [2021-08-29 09:05:24,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:05:24,923 INFO L208 MainTranslator]: Completed translation [2021-08-29 09:05:24,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24 WrapperNode [2021-08-29 09:05:24,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 09:05:24,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 09:05:24,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 09:05:24,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 09:05:24,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:24,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:24,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 09:05:24,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 09:05:24,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 09:05:24,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 09:05:24,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:24,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:25,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:25,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:25,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:25,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:25,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:25,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 09:05:25,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 09:05:25,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 09:05:25,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 09:05:25,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (1/1) ... [2021-08-29 09:05:25,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:05:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:05:25,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 09:05:25,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 09:05:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 09:05:25,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-29 09:05:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 09:05:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 09:05:25,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 09:05:25,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 09:05:25,374 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-08-29 09:05:25,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:05:25 BoogieIcfgContainer [2021-08-29 09:05:25,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 09:05:25,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 09:05:25,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 09:05:25,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 09:05:25,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:05:24" (1/3) ... [2021-08-29 09:05:25,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2683c493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:05:25, skipping insertion in model container [2021-08-29 09:05:25,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:24" (2/3) ... [2021-08-29 09:05:25,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2683c493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:05:25, skipping insertion in model container [2021-08-29 09:05:25,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:05:25" (3/3) ... [2021-08-29 09:05:25,382 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2021-08-29 09:05:25,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 09:05:25,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-29 09:05:25,421 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 09:05:25,428 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 09:05:25,428 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-29 09:05:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 45 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-29 09:05:25,443 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:25,444 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-29 09:05:25,444 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:25,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:25,448 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-08-29 09:05:25,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:25,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91463681] [2021-08-29 09:05:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:25,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:05:25,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:25,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91463681] [2021-08-29 09:05:25,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91463681] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:25,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:25,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:05:25,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614296713] [2021-08-29 09:05:25,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:05:25,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:25,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:05:25,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:05:25,649 INFO L87 Difference]: Start difference. First operand has 46 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 45 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:25,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:25,730 INFO L93 Difference]: Finished difference Result 85 states and 110 transitions. [2021-08-29 09:05:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:05:25,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-29 09:05:25,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:25,738 INFO L225 Difference]: With dead ends: 85 [2021-08-29 09:05:25,738 INFO L226 Difference]: Without dead ends: 36 [2021-08-29 09:05:25,741 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:05:25,744 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.34ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:25,744 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 52 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 64.34ms Time] [2021-08-29 09:05:25,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-29 09:05:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-29 09:05:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.28125) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-08-29 09:05:25,771 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 4 [2021-08-29 09:05:25,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:25,772 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-08-29 09:05:25,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:25,773 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-08-29 09:05:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 09:05:25,774 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:25,774 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:05:25,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 09:05:25,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:25,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:25,778 INFO L82 PathProgramCache]: Analyzing trace with hash 170685048, now seen corresponding path program 1 times [2021-08-29 09:05:25,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:25,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897900989] [2021-08-29 09:05:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:25,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:05:25,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:25,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897900989] [2021-08-29 09:05:25,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897900989] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:25,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:25,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 09:05:25,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35753470] [2021-08-29 09:05:25,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 09:05:25,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 09:05:25,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:05:25,943 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:26,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:26,113 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2021-08-29 09:05:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 09:05:26,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 09:05:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:26,115 INFO L225 Difference]: With dead ends: 64 [2021-08-29 09:05:26,116 INFO L226 Difference]: Without dead ends: 38 [2021-08-29 09:05:26,116 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.95ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 09:05:26,118 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.28ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:26,119 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 164 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 122.28ms Time] [2021-08-29 09:05:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-29 09:05:26,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-08-29 09:05:26,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-08-29 09:05:26,129 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 15 [2021-08-29 09:05:26,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:26,129 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-08-29 09:05:26,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:26,130 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-08-29 09:05:26,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 09:05:26,130 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:26,131 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:05:26,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 09:05:26,131 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:26,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:26,132 INFO L82 PathProgramCache]: Analyzing trace with hash 227943350, now seen corresponding path program 1 times [2021-08-29 09:05:26,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:26,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866410161] [2021-08-29 09:05:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:26,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:05:26,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:26,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866410161] [2021-08-29 09:05:26,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866410161] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:26,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:26,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 09:05:26,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608217942] [2021-08-29 09:05:26,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 09:05:26,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 09:05:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:05:26,224 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:26,346 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2021-08-29 09:05:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 09:05:26,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 09:05:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:26,348 INFO L225 Difference]: With dead ends: 67 [2021-08-29 09:05:26,349 INFO L226 Difference]: Without dead ends: 36 [2021-08-29 09:05:26,349 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.88ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 09:05:26,350 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.16ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:26,350 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 159 Unknown, 0 Unchecked, 2.36ms Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 89.16ms Time] [2021-08-29 09:05:26,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-29 09:05:26,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-29 09:05:26,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.21875) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-08-29 09:05:26,354 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 15 [2021-08-29 09:05:26,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:26,354 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-08-29 09:05:26,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-08-29 09:05:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 09:05:26,355 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:26,356 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:05:26,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 09:05:26,357 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:26,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:26,358 INFO L82 PathProgramCache]: Analyzing trace with hash 929007928, now seen corresponding path program 1 times [2021-08-29 09:05:26,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:26,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177435358] [2021-08-29 09:05:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:26,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:05:26,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:26,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177435358] [2021-08-29 09:05:26,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177435358] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:26,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:26,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-29 09:05:26,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45515836] [2021-08-29 09:05:26,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 09:05:26,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:26,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 09:05:26,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-29 09:05:26,543 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:26,762 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2021-08-29 09:05:26,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 09:05:26,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 09:05:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:26,764 INFO L225 Difference]: With dead ends: 54 [2021-08-29 09:05:26,764 INFO L226 Difference]: Without dead ends: 50 [2021-08-29 09:05:26,764 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.28ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-29 09:05:26,766 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 158.01ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:26,766 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 317 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [7 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 158.01ms Time] [2021-08-29 09:05:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-29 09:05:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2021-08-29 09:05:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-08-29 09:05:26,771 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 15 [2021-08-29 09:05:26,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:26,771 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-08-29 09:05:26,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-08-29 09:05:26,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 09:05:26,772 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:26,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:05:26,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 09:05:26,773 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:26,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:26,773 INFO L82 PathProgramCache]: Analyzing trace with hash -93151004, now seen corresponding path program 1 times [2021-08-29 09:05:26,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:26,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807857779] [2021-08-29 09:05:26,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:26,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:05:26,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:26,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807857779] [2021-08-29 09:05:26,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807857779] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:26,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:26,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-29 09:05:26,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217033828] [2021-08-29 09:05:26,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-29 09:05:26,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-29 09:05:26,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-08-29 09:05:26,895 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:27,201 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2021-08-29 09:05:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-29 09:05:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-29 09:05:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:27,202 INFO L225 Difference]: With dead ends: 54 [2021-08-29 09:05:27,202 INFO L226 Difference]: Without dead ends: 46 [2021-08-29 09:05:27,203 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 198.00ms TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-08-29 09:05:27,204 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.00ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.11ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:27,204 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 252 Unknown, 0 Unchecked, 2.00ms Time], IncrementalHoareTripleChecker [46 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 153.11ms Time] [2021-08-29 09:05:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-29 09:05:27,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-08-29 09:05:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.186046511627907) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-08-29 09:05:27,208 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 19 [2021-08-29 09:05:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:27,209 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-08-29 09:05:27,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-08-29 09:05:27,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 09:05:27,209 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:27,209 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:05:27,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 09:05:27,210 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:27,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:27,210 INFO L82 PathProgramCache]: Analyzing trace with hash -93091422, now seen corresponding path program 1 times [2021-08-29 09:05:27,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:27,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120648830] [2021-08-29 09:05:27,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:27,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:05:27,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:27,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120648830] [2021-08-29 09:05:27,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120648830] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:27,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:27,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 09:05:27,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188022428] [2021-08-29 09:05:27,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 09:05:27,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:27,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 09:05:27,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-29 09:05:27,295 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:27,520 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-08-29 09:05:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 09:05:27,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-29 09:05:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:27,521 INFO L225 Difference]: With dead ends: 52 [2021-08-29 09:05:27,522 INFO L226 Difference]: Without dead ends: 40 [2021-08-29 09:05:27,522 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 144.58ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-29 09:05:27,523 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.17ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:27,523 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 202 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [12 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 103.17ms Time] [2021-08-29 09:05:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-29 09:05:27,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-08-29 09:05:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.131578947368421) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-08-29 09:05:27,527 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 19 [2021-08-29 09:05:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:27,528 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-08-29 09:05:27,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-08-29 09:05:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-29 09:05:27,529 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:27,529 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-08-29 09:05:27,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 09:05:27,529 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:27,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1793070580, now seen corresponding path program 1 times [2021-08-29 09:05:27,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:27,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217279482] [2021-08-29 09:05:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:27,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:05:27,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:27,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217279482] [2021-08-29 09:05:27,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217279482] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:27,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:27,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-29 09:05:27,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052238788] [2021-08-29 09:05:27,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-29 09:05:27,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:27,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-29 09:05:27,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-29 09:05:27,617 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:27,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:27,746 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2021-08-29 09:05:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 09:05:27,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-29 09:05:27,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:27,748 INFO L225 Difference]: With dead ends: 50 [2021-08-29 09:05:27,748 INFO L226 Difference]: Without dead ends: 48 [2021-08-29 09:05:27,748 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 74.88ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-08-29 09:05:27,749 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 155 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.71ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:27,749 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 0 Invalid, 160 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 80.71ms Time] [2021-08-29 09:05:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-29 09:05:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-08-29 09:05:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.125) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-08-29 09:05:27,754 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 25 [2021-08-29 09:05:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:27,754 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-08-29 09:05:27,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-08-29 09:05:27,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-29 09:05:27,755 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:27,756 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-08-29 09:05:27,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 09:05:27,756 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:27,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:27,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1793130162, now seen corresponding path program 1 times [2021-08-29 09:05:27,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:27,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140322512] [2021-08-29 09:05:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:27,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:05:27,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:27,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140322512] [2021-08-29 09:05:27,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140322512] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:27,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:27,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-29 09:05:27,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894063320] [2021-08-29 09:05:27,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-29 09:05:27,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-29 09:05:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-08-29 09:05:27,889 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:28,113 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2021-08-29 09:05:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-29 09:05:28,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-29 09:05:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:28,114 INFO L225 Difference]: With dead ends: 48 [2021-08-29 09:05:28,114 INFO L226 Difference]: Without dead ends: 46 [2021-08-29 09:05:28,115 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 197.00ms TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-08-29 09:05:28,115 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 186 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.73ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:28,116 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 0 Invalid, 210 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [22 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 94.73ms Time] [2021-08-29 09:05:28,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-29 09:05:28,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-08-29 09:05:28,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-08-29 09:05:28,120 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 25 [2021-08-29 09:05:28,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:28,120 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-08-29 09:05:28,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:28,120 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-08-29 09:05:28,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-29 09:05:28,121 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:28,121 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-08-29 09:05:28,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 09:05:28,122 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:28,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1850388464, now seen corresponding path program 1 times [2021-08-29 09:05:28,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:28,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75578302] [2021-08-29 09:05:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:28,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:05:28,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:28,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75578302] [2021-08-29 09:05:28,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75578302] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:28,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:28,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-29 09:05:28,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591243891] [2021-08-29 09:05:28,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-29 09:05:28,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:28,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-29 09:05:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-08-29 09:05:28,312 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:28,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:28,661 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2021-08-29 09:05:28,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-29 09:05:28,662 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-29 09:05:28,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:28,663 INFO L225 Difference]: With dead ends: 48 [2021-08-29 09:05:28,663 INFO L226 Difference]: Without dead ends: 44 [2021-08-29 09:05:28,663 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 269.31ms TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2021-08-29 09:05:28,664 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.81ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:28,664 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 287 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [3 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 144.81ms Time] [2021-08-29 09:05:28,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-29 09:05:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2021-08-29 09:05:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-08-29 09:05:28,667 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 25 [2021-08-29 09:05:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:28,667 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-08-29 09:05:28,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-08-29 09:05:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-29 09:05:28,668 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:28,668 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-08-29 09:05:28,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 09:05:28,668 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:28,669 INFO L82 PathProgramCache]: Analyzing trace with hash 758876958, now seen corresponding path program 1 times [2021-08-29 09:05:28,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:28,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932069931] [2021-08-29 09:05:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:28,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:05:28,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:28,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932069931] [2021-08-29 09:05:28,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932069931] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:28,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:28,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-29 09:05:28,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678625432] [2021-08-29 09:05:28,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 09:05:28,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:28,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 09:05:28,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-29 09:05:28,775 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:28,898 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-08-29 09:05:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 09:05:28,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-08-29 09:05:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:28,898 INFO L225 Difference]: With dead ends: 44 [2021-08-29 09:05:28,898 INFO L226 Difference]: Without dead ends: 34 [2021-08-29 09:05:28,899 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 89.14ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-08-29 09:05:28,899 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 111 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.51ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:28,899 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 52.51ms Time] [2021-08-29 09:05:28,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-29 09:05:28,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-08-29 09:05:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-08-29 09:05:28,903 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 29 [2021-08-29 09:05:28,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:28,903 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-08-29 09:05:28,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:05:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-08-29 09:05:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-29 09:05:28,904 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:28,904 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-08-29 09:05:28,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 09:05:28,904 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 09:05:28,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:28,905 INFO L82 PathProgramCache]: Analyzing trace with hash -50469668, now seen corresponding path program 1 times [2021-08-29 09:05:28,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:28,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490252038] [2021-08-29 09:05:28,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:28,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:05:28,919 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 09:05:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:05:28,949 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 09:05:28,949 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 09:05:28,950 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-08-29 09:05:28,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-08-29 09:05:28,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-08-29 09:05:28,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-08-29 09:05:28,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-08-29 09:05:28,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-08-29 09:05:28,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 09:05:28,958 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 09:05:28,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:05:28 BoogieIcfgContainer [2021-08-29 09:05:28,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 09:05:28,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 09:05:28,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 09:05:28,991 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 09:05:28,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:05:25" (3/4) ... [2021-08-29 09:05:28,992 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 09:05:29,032 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 09:05:29,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 09:05:29,033 INFO L158 Benchmark]: Toolchain (without parser) took 4540.71ms. Allocated memory was 48.2MB in the beginning and 81.8MB in the end (delta: 33.6MB). Free memory was 22.6MB in the beginning and 61.6MB in the end (delta: -39.0MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2021-08-29 09:05:29,033 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 48.2MB. Free memory was 30.5MB in the beginning and 30.5MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:05:29,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.96ms. Allocated memory was 48.2MB in the beginning and 67.1MB in the end (delta: 18.9MB). Free memory was 22.4MB in the beginning and 43.7MB in the end (delta: -21.3MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-08-29 09:05:29,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.99ms. Allocated memory is still 67.1MB. Free memory was 43.7MB in the beginning and 41.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:05:29,034 INFO L158 Benchmark]: Boogie Preprocessor took 45.40ms. Allocated memory is still 67.1MB. Free memory was 41.6MB in the beginning and 40.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:05:29,034 INFO L158 Benchmark]: RCFGBuilder took 347.56ms. Allocated memory is still 67.1MB. Free memory was 40.1MB in the beginning and 41.9MB in the end (delta: -1.8MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-08-29 09:05:29,035 INFO L158 Benchmark]: TraceAbstraction took 3612.75ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 41.4MB in the beginning and 31.8MB in the end (delta: 9.6MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2021-08-29 09:05:29,035 INFO L158 Benchmark]: Witness Printer took 41.72ms. Allocated memory is still 81.8MB. Free memory was 31.8MB in the beginning and 61.6MB in the end (delta: -29.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 09:05:29,036 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 48.2MB. Free memory was 30.5MB in the beginning and 30.5MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.96ms. Allocated memory was 48.2MB in the beginning and 67.1MB in the end (delta: 18.9MB). Free memory was 22.4MB in the beginning and 43.7MB in the end (delta: -21.3MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.99ms. Allocated memory is still 67.1MB. Free memory was 43.7MB in the beginning and 41.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.40ms. Allocated memory is still 67.1MB. Free memory was 41.6MB in the beginning and 40.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 347.56ms. Allocated memory is still 67.1MB. Free memory was 40.1MB in the beginning and 41.9MB in the end (delta: -1.8MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3612.75ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 41.4MB in the beginning and 31.8MB in the end (delta: 9.6MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * Witness Printer took 41.72ms. Allocated memory is still 81.8MB. Free memory was 31.8MB in the beginning and 61.6MB in the end (delta: -29.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L519] void * guard_malloc_counter = 0; [L534] struct list_head *elem = ((void *)0); [L544] static struct list_head head; VAL [elem={0:0}, guard_malloc_counter={0:0}, head={6:0}] [L546] struct list_head *dev1, *dev2; [L522] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:0}, head={6:0}] [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; VAL [elem={0:0}, guard_malloc_counter={0:1}, head={6:0}] [L529] return __getMemory(size); [L547] dev1 = my_malloc(sizeof(*dev1)) [L522] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:1}, head={6:0}] [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; VAL [elem={0:0}, guard_malloc_counter={0:2}, head={6:0}] [L529] return __getMemory(size); [L548] dev2 = my_malloc(sizeof(*dev2)) [L549] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:2}, head={6:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new VAL [elem={0:2}, guard_malloc_counter={0:2}, head={6:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:2}, guard_malloc_counter={0:2}, head={6:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new VAL [elem={0:1}, guard_malloc_counter={0:2}, head={6:0}] [L541] COND FALSE !(entry==elem) VAL [elem={0:1}, guard_malloc_counter={0:2}, head={6:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:1}, guard_malloc_counter={0:2}, head={6:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:1}, guard_malloc_counter={0:2}, head={6:0}] [L6] reach_error() VAL [elem={0:1}, guard_malloc_counter={0:2}, head={6:0}] - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3536.74ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 12.38ms, AutomataDifference: 2035.80ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.54ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1033 SdHoareTripleChecker+Valid, 1062.82ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1033 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 854.15ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 678 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1825 IncrementalHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 0 mSDtfsCounter, 1825 mSolverCounterSat, 15.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1155.15ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 51.34ms AutomataMinimizationTime, 10 MinimizatonAttempts, 34 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.29ms SsaConstructionTime, 168.21ms SatisfiabilityAnalysisTime, 1015.95ms InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 929 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2021-08-29 09:05:29,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...