./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/dll-token-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/dll-token-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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 valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d66a07d2a90ded112831066684eab385c0c1369 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 16:03:09,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 16:03:09,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 16:03:09,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 16:03:09,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 16:03:09,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 16:03:09,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 16:03:09,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 16:03:09,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 16:03:09,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 16:03:09,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 16:03:09,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 16:03:09,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 16:03:09,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 16:03:09,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 16:03:09,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 16:03:09,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 16:03:09,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 16:03:09,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 16:03:09,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 16:03:09,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 16:03:09,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 16:03:09,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 16:03:09,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 16:03:09,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 16:03:09,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 16:03:09,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 16:03:09,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 16:03:09,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 16:03:09,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 16:03:09,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 16:03:09,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 16:03:09,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 16:03:09,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 16:03:09,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 16:03:09,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 16:03:09,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 16:03:09,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 16:03:09,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 16:03:09,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 16:03:09,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 16:03:09,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-30 16:03:09,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 16:03:09,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 16:03:09,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 16:03:09,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 16:03:09,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 16:03:09,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 16:03:09,212 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 16:03:09,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 16:03:09,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 16:03:09,213 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 16:03:09,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 16:03:09,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 16:03:09,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 16:03:09,213 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 16:03:09,214 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 16:03:09,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 16:03:09,225 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 16:03:09,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 16:03:09,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 16:03:09,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 16:03:09,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 16:03:09,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 16:03:09,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:03:09,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 16:03:09,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 16:03:09,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 16:03:09,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 16:03:09,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 16:03:09,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d66a07d2a90ded112831066684eab385c0c1369 [2021-08-30 16:03:09,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 16:03:09,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 16:03:09,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 16:03:09,476 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 16:03:09,477 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 16:03:09,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-token-2.i [2021-08-30 16:03:09,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99337fc97/87971dbd86394c16ab532a87f22cacdf/FLAG4950bbae7 [2021-08-30 16:03:09,961 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 16:03:09,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-2.i [2021-08-30 16:03:09,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99337fc97/87971dbd86394c16ab532a87f22cacdf/FLAG4950bbae7 [2021-08-30 16:03:09,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99337fc97/87971dbd86394c16ab532a87f22cacdf [2021-08-30 16:03:09,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 16:03:09,996 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 16:03:09,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 16:03:09,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 16:03:09,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 16:03:10,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:03:09" (1/1) ... [2021-08-30 16:03:10,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2c5416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10, skipping insertion in model container [2021-08-30 16:03:10,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:03:09" (1/1) ... [2021-08-30 16:03:10,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 16:03:10,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 16:03:10,208 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/forester-heap/dll-token-2.i[22229,22242] [2021-08-30 16:03:10,220 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/forester-heap/dll-token-2.i[22398,22411] [2021-08-30 16:03:10,222 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/forester-heap/dll-token-2.i[22489,22502] [2021-08-30 16:03:10,223 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/forester-heap/dll-token-2.i[22571,22584] [2021-08-30 16:03:10,224 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/forester-heap/dll-token-2.i[22649,22662] [2021-08-30 16:03:10,227 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/forester-heap/dll-token-2.i[22795,22808] [2021-08-30 16:03:10,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:03:10,240 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 16:03:10,272 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/forester-heap/dll-token-2.i[22229,22242] [2021-08-30 16:03:10,274 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/forester-heap/dll-token-2.i[22398,22411] [2021-08-30 16:03:10,274 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/forester-heap/dll-token-2.i[22489,22502] [2021-08-30 16:03:10,275 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/forester-heap/dll-token-2.i[22571,22584] [2021-08-30 16:03:10,276 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/forester-heap/dll-token-2.i[22649,22662] [2021-08-30 16:03:10,276 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/forester-heap/dll-token-2.i[22795,22808] [2021-08-30 16:03:10,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:03:10,300 INFO L208 MainTranslator]: Completed translation [2021-08-30 16:03:10,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10 WrapperNode [2021-08-30 16:03:10,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 16:03:10,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 16:03:10,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 16:03:10,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 16:03:10,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10" (1/1) ... [2021-08-30 16:03:10,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10" (1/1) ... [2021-08-30 16:03:10,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10" (1/1) ... [2021-08-30 16:03:10,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10" (1/1) ... [2021-08-30 16:03:10,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10" (1/1) ... [2021-08-30 16:03:10,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10" (1/1) ... [2021-08-30 16:03:10,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10" (1/1) ... [2021-08-30 16:03:10,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 16:03:10,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 16:03:10,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 16:03:10,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 16:03:10,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10" (1/1) ... [2021-08-30 16:03:10,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:03:10,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:10,395 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) [2021-08-30 16:03:10,423 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 [2021-08-30 16:03:10,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 16:03:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 16:03:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 16:03:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 16:03:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 16:03:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 16:03:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 16:03:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 16:03:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 16:03:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 16:03:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 16:03:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 16:03:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 16:03:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 16:03:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 16:03:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 16:03:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 16:03:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 16:03:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 16:03:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 16:03:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 16:03:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 16:03:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 16:03:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 16:03:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 16:03:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 16:03:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 16:03:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 16:03:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 16:03:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 16:03:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 16:03:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 16:03:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 16:03:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 16:03:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 16:03:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 16:03:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 16:03:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 16:03:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 16:03:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 16:03:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 16:03:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 16:03:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 16:03:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 16:03:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 16:03:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 16:03:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 16:03:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 16:03:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 16:03:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 16:03:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 16:03:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 16:03:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 16:03:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 16:03:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 16:03:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 16:03:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 16:03:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 16:03:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-30 16:03:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 16:03:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 16:03:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 16:03:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 16:03:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 16:03:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 16:03:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 16:03:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 16:03:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 16:03:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 16:03:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 16:03:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 16:03:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 16:03:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 16:03:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 16:03:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 16:03:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 16:03:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 16:03:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 16:03:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 16:03:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 16:03:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 16:03:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 16:03:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 16:03:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 16:03:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 16:03:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 16:03:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 16:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 16:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 16:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 16:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 16:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 16:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 16:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 16:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 16:03:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 16:03:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 16:03:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 16:03:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 16:03:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 16:03:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 16:03:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 16:03:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 16:03:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 16:03:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 16:03:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 16:03:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 16:03:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 16:03:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 16:03:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 16:03:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 16:03:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 16:03:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 16:03:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 16:03:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 16:03:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 16:03:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 16:03:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 16:03:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 16:03:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 16:03:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 16:03:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 16:03:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 16:03:10,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 16:03:10,791 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-08-30 16:03:10,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:10 BoogieIcfgContainer [2021-08-30 16:03:10,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 16:03:10,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 16:03:10,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 16:03:10,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 16:03:10,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:03:09" (1/3) ... [2021-08-30 16:03:10,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a08bda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:03:10, skipping insertion in model container [2021-08-30 16:03:10,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:10" (2/3) ... [2021-08-30 16:03:10,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a08bda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:03:10, skipping insertion in model container [2021-08-30 16:03:10,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:10" (3/3) ... [2021-08-30 16:03:10,801 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2021-08-30 16:03:10,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 16:03:10,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-08-30 16:03:10,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 16:03:10,838 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-08-30 16:03:10,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-08-30 16:03:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 136 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 16:03:10,857 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:10,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:10,858 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:10,866 INFO L82 PathProgramCache]: Analyzing trace with hash -106181274, now seen corresponding path program 1 times [2021-08-30 16:03:10,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:10,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018748677] [2021-08-30 16:03:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:10,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:11,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:11,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:11,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018748677] [2021-08-30 16:03:11,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018748677] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:11,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:11,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 16:03:11,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740843035] [2021-08-30 16:03:11,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:11,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:11,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:11,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:11,114 INFO L87 Difference]: Start difference. First operand has 141 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 136 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:11,444 INFO L93 Difference]: Finished difference Result 158 states and 161 transitions. [2021-08-30 16:03:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:03:11,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 16:03:11,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:11,455 INFO L225 Difference]: With dead ends: 158 [2021-08-30 16:03:11,455 INFO L226 Difference]: Without dead ends: 155 [2021-08-30 16:03:11,457 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.36ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:11,461 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 110 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 209.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.79ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 274.29ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:11,463 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 10 Invalid, 319 Unknown, 0 Unchecked, 6.79ms Time], IncrementalHoareTripleChecker [5 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 274.29ms Time] [2021-08-30 16:03:11,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-30 16:03:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 135. [2021-08-30 16:03:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 71 states have (on average 1.8873239436619718) internal successors, (134), 131 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2021-08-30 16:03:11,500 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 7 [2021-08-30 16:03:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:11,501 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2021-08-30 16:03:11,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2021-08-30 16:03:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 16:03:11,501 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:11,502 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:11,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 16:03:11,502 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:11,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash -106181273, now seen corresponding path program 1 times [2021-08-30 16:03:11,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:11,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637995670] [2021-08-30 16:03:11,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:11,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:11,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:11,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637995670] [2021-08-30 16:03:11,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637995670] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:11,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:11,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 16:03:11,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990184738] [2021-08-30 16:03:11,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:11,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:11,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:11,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:11,581 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:11,792 INFO L93 Difference]: Finished difference Result 160 states and 162 transitions. [2021-08-30 16:03:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:03:11,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 16:03:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:11,797 INFO L225 Difference]: With dead ends: 160 [2021-08-30 16:03:11,797 INFO L226 Difference]: Without dead ends: 160 [2021-08-30 16:03:11,797 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.57ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:11,798 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 115 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.39ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.16ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:11,799 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 7 Invalid, 307 Unknown, 0 Unchecked, 4.39ms Time], IncrementalHoareTripleChecker [5 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 185.16ms Time] [2021-08-30 16:03:11,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-30 16:03:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 132. [2021-08-30 16:03:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 71 states have (on average 1.8450704225352113) internal successors, (131), 128 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2021-08-30 16:03:11,830 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 7 [2021-08-30 16:03:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:11,830 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2021-08-30 16:03:11,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2021-08-30 16:03:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-30 16:03:11,831 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:11,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:11,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 16:03:11,831 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:11,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:11,832 INFO L82 PathProgramCache]: Analyzing trace with hash 550299256, now seen corresponding path program 1 times [2021-08-30 16:03:11,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:11,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319801434] [2021-08-30 16:03:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:11,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:11,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:11,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:11,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319801434] [2021-08-30 16:03:11,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319801434] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:11,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:11,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:03:11,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982503150] [2021-08-30 16:03:11,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:03:11,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:03:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:11,912 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:12,104 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2021-08-30 16:03:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:03:12,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-30 16:03:12,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:12,106 INFO L225 Difference]: With dead ends: 136 [2021-08-30 16:03:12,106 INFO L226 Difference]: Without dead ends: 136 [2021-08-30 16:03:12,106 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.36ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:12,107 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 189 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.48ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:12,107 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 10 Invalid, 326 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [35 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 175.48ms Time] [2021-08-30 16:03:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-08-30 16:03:12,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 119. [2021-08-30 16:03:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.643835616438356) internal successors, (120), 115 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2021-08-30 16:03:12,111 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 13 [2021-08-30 16:03:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:12,111 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2021-08-30 16:03:12,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2021-08-30 16:03:12,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-30 16:03:12,112 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:12,112 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:12,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 16:03:12,128 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr18REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:12,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:12,129 INFO L82 PathProgramCache]: Analyzing trace with hash 550299257, now seen corresponding path program 1 times [2021-08-30 16:03:12,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:12,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77946782] [2021-08-30 16:03:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:12,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:12,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:12,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77946782] [2021-08-30 16:03:12,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77946782] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:12,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:12,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:03:12,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145305433] [2021-08-30 16:03:12,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:03:12,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:12,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:03:12,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:12,213 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:12,483 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2021-08-30 16:03:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:03:12,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-30 16:03:12,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:12,485 INFO L225 Difference]: With dead ends: 211 [2021-08-30 16:03:12,485 INFO L226 Difference]: Without dead ends: 211 [2021-08-30 16:03:12,485 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.42ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:12,486 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 225 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 197.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.13ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 244.17ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:12,486 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 10 Invalid, 407 Unknown, 0 Unchecked, 4.13ms Time], IncrementalHoareTripleChecker [30 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 244.17ms Time] [2021-08-30 16:03:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-08-30 16:03:12,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 156. [2021-08-30 16:03:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 110 states have (on average 1.5272727272727273) internal successors, (168), 152 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 171 transitions. [2021-08-30 16:03:12,492 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 171 transitions. Word has length 13 [2021-08-30 16:03:12,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:12,493 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 171 transitions. [2021-08-30 16:03:12,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:12,493 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 171 transitions. [2021-08-30 16:03:12,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 16:03:12,493 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:12,494 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:12,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 16:03:12,494 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:12,495 INFO L82 PathProgramCache]: Analyzing trace with hash 75654871, now seen corresponding path program 1 times [2021-08-30 16:03:12,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:12,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668277615] [2021-08-30 16:03:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:12,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:12,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:12,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668277615] [2021-08-30 16:03:12,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668277615] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:12,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:12,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:03:12,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823625435] [2021-08-30 16:03:12,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:03:12,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:12,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:03:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:12,572 INFO L87 Difference]: Start difference. First operand 156 states and 171 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:12,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:12,788 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2021-08-30 16:03:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 16:03:12,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-30 16:03:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:12,789 INFO L225 Difference]: With dead ends: 155 [2021-08-30 16:03:12,789 INFO L226 Difference]: Without dead ends: 155 [2021-08-30 16:03:12,789 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.93ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:03:12,790 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.60ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.14ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:12,790 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 13 Invalid, 563 Unknown, 0 Unchecked, 1.60ms Time], IncrementalHoareTripleChecker [3 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 198.14ms Time] [2021-08-30 16:03:12,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-30 16:03:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-08-30 16:03:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 110 states have (on average 1.509090909090909) internal successors, (166), 151 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2021-08-30 16:03:12,794 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 16 [2021-08-30 16:03:12,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:12,795 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2021-08-30 16:03:12,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2021-08-30 16:03:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 16:03:12,795 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:12,796 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:12,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 16:03:12,796 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:12,796 INFO L82 PathProgramCache]: Analyzing trace with hash 75654872, now seen corresponding path program 1 times [2021-08-30 16:03:12,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:12,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916565661] [2021-08-30 16:03:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:12,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:12,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:12,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:12,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916565661] [2021-08-30 16:03:12,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916565661] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:12,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:12,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:03:12,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312581503] [2021-08-30 16:03:12,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:03:12,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:03:12,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:12,858 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:13,096 INFO L93 Difference]: Finished difference Result 154 states and 167 transitions. [2021-08-30 16:03:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:03:13,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-30 16:03:13,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:13,097 INFO L225 Difference]: With dead ends: 154 [2021-08-30 16:03:13,097 INFO L226 Difference]: Without dead ends: 154 [2021-08-30 16:03:13,097 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.92ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:03:13,098 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 171.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 217.28ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:13,098 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 563 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [2 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 217.28ms Time] [2021-08-30 16:03:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-08-30 16:03:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-08-30 16:03:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 110 states have (on average 1.490909090909091) internal successors, (164), 150 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:13,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 167 transitions. [2021-08-30 16:03:13,102 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 167 transitions. Word has length 16 [2021-08-30 16:03:13,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:13,102 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 167 transitions. [2021-08-30 16:03:13,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:13,102 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 167 transitions. [2021-08-30 16:03:13,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 16:03:13,103 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:13,103 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:13,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 16:03:13,103 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr23REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:13,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:13,103 INFO L82 PathProgramCache]: Analyzing trace with hash -931365320, now seen corresponding path program 1 times [2021-08-30 16:03:13,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:13,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325874163] [2021-08-30 16:03:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:13,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:13,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:13,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325874163] [2021-08-30 16:03:13,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325874163] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:13,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:13,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:03:13,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223921319] [2021-08-30 16:03:13,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:03:13,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:13,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:03:13,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:13,160 INFO L87 Difference]: Start difference. First operand 154 states and 167 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:13,365 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2021-08-30 16:03:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 16:03:13,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 16:03:13,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:13,366 INFO L225 Difference]: With dead ends: 153 [2021-08-30 16:03:13,366 INFO L226 Difference]: Without dead ends: 153 [2021-08-30 16:03:13,366 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.95ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:03:13,367 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 11 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 187.79ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:13,367 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 13 Invalid, 551 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [3 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 187.79ms Time] [2021-08-30 16:03:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-30 16:03:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-08-30 16:03:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 110 states have (on average 1.4727272727272727) internal successors, (162), 149 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2021-08-30 16:03:13,381 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 18 [2021-08-30 16:03:13,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:13,381 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2021-08-30 16:03:13,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:13,382 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2021-08-30 16:03:13,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 16:03:13,382 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:13,382 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:13,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 16:03:13,382 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr24REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:13,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:13,383 INFO L82 PathProgramCache]: Analyzing trace with hash -931365319, now seen corresponding path program 1 times [2021-08-30 16:03:13,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:13,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117204899] [2021-08-30 16:03:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:13,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:13,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:13,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117204899] [2021-08-30 16:03:13,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117204899] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:13,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:13,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:03:13,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15688503] [2021-08-30 16:03:13,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:03:13,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:03:13,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:13,482 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:13,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:13,722 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2021-08-30 16:03:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:03:13,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 16:03:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:13,723 INFO L225 Difference]: With dead ends: 152 [2021-08-30 16:03:13,723 INFO L226 Difference]: Without dead ends: 152 [2021-08-30 16:03:13,723 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.79ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:03:13,723 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.76ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:13,724 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 553 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [2 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 216.76ms Time] [2021-08-30 16:03:13,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-30 16:03:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-08-30 16:03:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 110 states have (on average 1.4545454545454546) internal successors, (160), 148 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 163 transitions. [2021-08-30 16:03:13,726 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 163 transitions. Word has length 18 [2021-08-30 16:03:13,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:13,726 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 163 transitions. [2021-08-30 16:03:13,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 163 transitions. [2021-08-30 16:03:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 16:03:13,727 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:13,727 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] [2021-08-30 16:03:13,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 16:03:13,727 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:13,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:13,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1665541607, now seen corresponding path program 1 times [2021-08-30 16:03:13,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:13,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3945424] [2021-08-30 16:03:13,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:13,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:13,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:13,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3945424] [2021-08-30 16:03:13,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3945424] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:13,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:13,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-30 16:03:13,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556099067] [2021-08-30 16:03:13,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 16:03:13,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:13,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 16:03:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-30 16:03:13,867 INFO L87 Difference]: Start difference. First operand 152 states and 163 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:14,151 INFO L93 Difference]: Finished difference Result 156 states and 163 transitions. [2021-08-30 16:03:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 16:03:14,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-30 16:03:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:14,152 INFO L225 Difference]: With dead ends: 156 [2021-08-30 16:03:14,152 INFO L226 Difference]: Without dead ends: 156 [2021-08-30 16:03:14,153 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 90.87ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-08-30 16:03:14,153 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 184 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.96ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 220.29ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:14,153 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 19 Invalid, 627 Unknown, 0 Unchecked, 5.96ms Time], IncrementalHoareTripleChecker [22 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 220.29ms Time] [2021-08-30 16:03:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-30 16:03:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2021-08-30 16:03:14,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 147 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2021-08-30 16:03:14,156 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 20 [2021-08-30 16:03:14,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:14,156 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2021-08-30 16:03:14,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:14,156 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2021-08-30 16:03:14,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 16:03:14,156 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:14,156 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] [2021-08-30 16:03:14,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 16:03:14,157 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:14,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:14,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1665541606, now seen corresponding path program 1 times [2021-08-30 16:03:14,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:14,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901869281] [2021-08-30 16:03:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:14,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:14,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:14,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901869281] [2021-08-30 16:03:14,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901869281] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:14,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:14,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 16:03:14,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860314700] [2021-08-30 16:03:14,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 16:03:14,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:14,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 16:03:14,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-08-30 16:03:14,274 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:14,762 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2021-08-30 16:03:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-30 16:03:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-30 16:03:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:14,763 INFO L225 Difference]: With dead ends: 153 [2021-08-30 16:03:14,763 INFO L226 Difference]: Without dead ends: 153 [2021-08-30 16:03:14,763 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 221.82ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-08-30 16:03:14,764 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 184 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 243.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.69ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 295.27ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:14,764 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 22 Invalid, 804 Unknown, 0 Unchecked, 3.69ms Time], IncrementalHoareTripleChecker [33 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 295.27ms Time] [2021-08-30 16:03:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-30 16:03:14,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 127. [2021-08-30 16:03:14,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 94 states have (on average 1.425531914893617) internal successors, (134), 123 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-08-30 16:03:14,766 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 20 [2021-08-30 16:03:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:14,766 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-08-30 16:03:14,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-08-30 16:03:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 16:03:14,767 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:14,767 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] [2021-08-30 16:03:14,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 16:03:14,767 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr27REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:14,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:14,767 INFO L82 PathProgramCache]: Analyzing trace with hash -815463296, now seen corresponding path program 1 times [2021-08-30 16:03:14,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:14,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697497411] [2021-08-30 16:03:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:14,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:14,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:14,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697497411] [2021-08-30 16:03:14,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697497411] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:14,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:14,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 16:03:14,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486052199] [2021-08-30 16:03:14,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 16:03:14,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:14,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 16:03:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-30 16:03:14,837 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:15,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:15,145 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2021-08-30 16:03:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 16:03:15,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-30 16:03:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:15,146 INFO L225 Difference]: With dead ends: 130 [2021-08-30 16:03:15,146 INFO L226 Difference]: Without dead ends: 130 [2021-08-30 16:03:15,146 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 69.18ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-30 16:03:15,147 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 63 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 258.96ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:15,147 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 22 Invalid, 781 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [14 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 258.96ms Time] [2021-08-30 16:03:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-08-30 16:03:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-08-30 16:03:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 122 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2021-08-30 16:03:15,149 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 21 [2021-08-30 16:03:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:15,149 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2021-08-30 16:03:15,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2021-08-30 16:03:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 16:03:15,150 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:15,150 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] [2021-08-30 16:03:15,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 16:03:15,150 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr28REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:15,150 INFO L82 PathProgramCache]: Analyzing trace with hash -815463295, now seen corresponding path program 1 times [2021-08-30 16:03:15,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:15,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813283514] [2021-08-30 16:03:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:15,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:15,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:15,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813283514] [2021-08-30 16:03:15,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813283514] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:15,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:15,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 16:03:15,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8059838] [2021-08-30 16:03:15,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 16:03:15,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:15,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 16:03:15,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-30 16:03:15,239 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:15,578 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-08-30 16:03:15,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 16:03:15,578 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-30 16:03:15,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:15,579 INFO L225 Difference]: With dead ends: 129 [2021-08-30 16:03:15,579 INFO L226 Difference]: Without dead ends: 129 [2021-08-30 16:03:15,579 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 96.53ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-30 16:03:15,579 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 60 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.29ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.16ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:15,579 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 19 Invalid, 677 Unknown, 0 Unchecked, 2.29ms Time], IncrementalHoareTripleChecker [14 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 270.16ms Time] [2021-08-30 16:03:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-30 16:03:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2021-08-30 16:03:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 121 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:15,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2021-08-30 16:03:15,582 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 21 [2021-08-30 16:03:15,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:15,582 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2021-08-30 16:03:15,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2021-08-30 16:03:15,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 16:03:15,582 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:15,582 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] [2021-08-30 16:03:15,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-30 16:03:15,583 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr16ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:15,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1437317817, now seen corresponding path program 1 times [2021-08-30 16:03:15,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:15,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776742426] [2021-08-30 16:03:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:15,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:15,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:15,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776742426] [2021-08-30 16:03:15,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776742426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:15,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:15,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 16:03:15,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569365708] [2021-08-30 16:03:15,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 16:03:15,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:15,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 16:03:15,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-08-30 16:03:15,697 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:16,174 INFO L93 Difference]: Finished difference Result 147 states and 154 transitions. [2021-08-30 16:03:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-30 16:03:16,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-30 16:03:16,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:16,175 INFO L225 Difference]: With dead ends: 147 [2021-08-30 16:03:16,175 INFO L226 Difference]: Without dead ends: 147 [2021-08-30 16:03:16,175 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 171.10ms TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2021-08-30 16:03:16,176 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 189 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.61ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 340.12ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:16,176 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 24 Invalid, 993 Unknown, 0 Unchecked, 4.61ms Time], IncrementalHoareTripleChecker [37 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 340.12ms Time] [2021-08-30 16:03:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-30 16:03:16,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 123. [2021-08-30 16:03:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 93 states have (on average 1.3978494623655915) internal successors, (130), 119 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-08-30 16:03:16,178 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 22 [2021-08-30 16:03:16,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:16,178 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-08-30 16:03:16,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:16,179 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-08-30 16:03:16,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 16:03:16,179 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:16,179 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] [2021-08-30 16:03:16,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-30 16:03:16,179 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr29ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:16,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:16,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1131965188, now seen corresponding path program 1 times [2021-08-30 16:03:16,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:16,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940497614] [2021-08-30 16:03:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:16,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:16,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:16,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:16,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940497614] [2021-08-30 16:03:16,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940497614] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:16,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:16,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:03:16,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932745119] [2021-08-30 16:03:16,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:03:16,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:03:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:16,234 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:16,415 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2021-08-30 16:03:16,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:03:16,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-08-30 16:03:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:16,416 INFO L225 Difference]: With dead ends: 185 [2021-08-30 16:03:16,416 INFO L226 Difference]: Without dead ends: 185 [2021-08-30 16:03:16,416 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.33ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:16,417 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 177 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 170.25ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:16,417 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 10 Invalid, 329 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [8 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 170.25ms Time] [2021-08-30 16:03:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-08-30 16:03:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 121. [2021-08-30 16:03:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.391304347826087) internal successors, (128), 117 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2021-08-30 16:03:16,419 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 24 [2021-08-30 16:03:16,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:16,419 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2021-08-30 16:03:16,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:16,420 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2021-08-30 16:03:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 16:03:16,420 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:16,420 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] [2021-08-30 16:03:16,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-30 16:03:16,420 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr39ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:16,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:16,420 INFO L82 PathProgramCache]: Analyzing trace with hash 554090547, now seen corresponding path program 1 times [2021-08-30 16:03:16,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:16,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679375516] [2021-08-30 16:03:16,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:16,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:16,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:16,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:16,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679375516] [2021-08-30 16:03:16,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679375516] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:16,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:16,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 16:03:16,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265281989] [2021-08-30 16:03:16,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:03:16,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:03:16,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:03:16,469 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:16,651 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2021-08-30 16:03:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:03:16,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-08-30 16:03:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:16,652 INFO L225 Difference]: With dead ends: 119 [2021-08-30 16:03:16,652 INFO L226 Difference]: Without dead ends: 119 [2021-08-30 16:03:16,653 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.03ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:03:16,653 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 171.33ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:16,653 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 13 Invalid, 465 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [4 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 171.33ms Time] [2021-08-30 16:03:16,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-30 16:03:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-08-30 16:03:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 91 states have (on average 1.3736263736263736) internal successors, (125), 115 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:16,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 128 transitions. [2021-08-30 16:03:16,655 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 128 transitions. Word has length 29 [2021-08-30 16:03:16,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:16,655 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 128 transitions. [2021-08-30 16:03:16,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:16,656 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 128 transitions. [2021-08-30 16:03:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 16:03:16,656 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:16,656 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] [2021-08-30 16:03:16,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-30 16:03:16,656 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:16,656 INFO L82 PathProgramCache]: Analyzing trace with hash 554123318, now seen corresponding path program 1 times [2021-08-30 16:03:16,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:16,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46378268] [2021-08-30 16:03:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:16,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:16,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:16,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:16,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46378268] [2021-08-30 16:03:16,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46378268] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:16,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:16,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-30 16:03:16,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186754074] [2021-08-30 16:03:16,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 16:03:16,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 16:03:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-08-30 16:03:16,870 INFO L87 Difference]: Start difference. First operand 119 states and 128 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:17,358 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2021-08-30 16:03:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-30 16:03:17,359 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-08-30 16:03:17,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:17,360 INFO L225 Difference]: With dead ends: 223 [2021-08-30 16:03:17,360 INFO L226 Difference]: Without dead ends: 223 [2021-08-30 16:03:17,360 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 178.40ms TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2021-08-30 16:03:17,360 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 377 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 303.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.05ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 365.76ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:17,360 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 13 Invalid, 940 Unknown, 0 Unchecked, 3.05ms Time], IncrementalHoareTripleChecker [44 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 365.76ms Time] [2021-08-30 16:03:17,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-08-30 16:03:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 135. [2021-08-30 16:03:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 107 states have (on average 1.3271028037383177) internal successors, (142), 131 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2021-08-30 16:03:17,363 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 29 [2021-08-30 16:03:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:17,363 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2021-08-30 16:03:17,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2021-08-30 16:03:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 16:03:17,364 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:17,364 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, 1, 1, 1] [2021-08-30 16:03:17,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-30 16:03:17,364 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr42REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:17,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:17,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1356236695, now seen corresponding path program 1 times [2021-08-30 16:03:17,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:17,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655968585] [2021-08-30 16:03:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:17,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:17,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:17,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655968585] [2021-08-30 16:03:17,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655968585] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:17,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:17,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 16:03:17,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547945141] [2021-08-30 16:03:17,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 16:03:17,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:17,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 16:03:17,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-08-30 16:03:17,495 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:17,997 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2021-08-30 16:03:17,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-30 16:03:17,998 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-08-30 16:03:17,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:17,998 INFO L225 Difference]: With dead ends: 189 [2021-08-30 16:03:17,998 INFO L226 Difference]: Without dead ends: 189 [2021-08-30 16:03:17,999 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 181.08ms TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2021-08-30 16:03:17,999 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 284 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 299.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 364.28ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:17,999 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 25 Invalid, 971 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [48 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 364.28ms Time] [2021-08-30 16:03:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-08-30 16:03:18,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 141. [2021-08-30 16:03:18,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 137 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2021-08-30 16:03:18,001 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 32 [2021-08-30 16:03:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:18,001 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2021-08-30 16:03:18,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2021-08-30 16:03:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 16:03:18,002 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:18,002 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, 1, 1, 1] [2021-08-30 16:03:18,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-30 16:03:18,002 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr43REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:18,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:18,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1356236696, now seen corresponding path program 1 times [2021-08-30 16:03:18,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:18,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934248250] [2021-08-30 16:03:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:18,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:18,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:18,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934248250] [2021-08-30 16:03:18,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934248250] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:18,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:18,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-30 16:03:18,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118180983] [2021-08-30 16:03:18,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 16:03:18,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:18,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 16:03:18,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-08-30 16:03:18,167 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:18,727 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2021-08-30 16:03:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-30 16:03:18,728 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-08-30 16:03:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:18,728 INFO L225 Difference]: With dead ends: 221 [2021-08-30 16:03:18,728 INFO L226 Difference]: Without dead ends: 221 [2021-08-30 16:03:18,729 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 239.28ms TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-08-30 16:03:18,729 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 172 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 315.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 383.21ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:18,729 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 31 Invalid, 1106 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [32 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 383.21ms Time] [2021-08-30 16:03:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-08-30 16:03:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 141. [2021-08-30 16:03:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 137 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 151 transitions. [2021-08-30 16:03:18,732 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 151 transitions. Word has length 32 [2021-08-30 16:03:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:18,732 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 151 transitions. [2021-08-30 16:03:18,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 151 transitions. [2021-08-30 16:03:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-30 16:03:18,733 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:18,733 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, 1, 1, 1, 1, 1] [2021-08-30 16:03:18,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-30 16:03:18,733 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-08-30 16:03:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:18,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1968378007, now seen corresponding path program 1 times [2021-08-30 16:03:18,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:18,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729748909] [2021-08-30 16:03:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:18,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 16:03:18,748 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 16:03:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 16:03:18,775 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 16:03:18,776 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 16:03:18,776 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK (63 of 64 remaining) [2021-08-30 16:03:18,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (62 of 64 remaining) [2021-08-30 16:03:18,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (61 of 64 remaining) [2021-08-30 16:03:18,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (60 of 64 remaining) [2021-08-30 16:03:18,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (59 of 64 remaining) [2021-08-30 16:03:18,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (58 of 64 remaining) [2021-08-30 16:03:18,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (57 of 64 remaining) [2021-08-30 16:03:18,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (56 of 64 remaining) [2021-08-30 16:03:18,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (55 of 64 remaining) [2021-08-30 16:03:18,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (54 of 64 remaining) [2021-08-30 16:03:18,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (53 of 64 remaining) [2021-08-30 16:03:18,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (52 of 64 remaining) [2021-08-30 16:03:18,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (51 of 64 remaining) [2021-08-30 16:03:18,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (50 of 64 remaining) [2021-08-30 16:03:18,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (49 of 64 remaining) [2021-08-30 16:03:18,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (48 of 64 remaining) [2021-08-30 16:03:18,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (47 of 64 remaining) [2021-08-30 16:03:18,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16ASSERT_VIOLATIONMEMORY_LEAK (46 of 64 remaining) [2021-08-30 16:03:18,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (45 of 64 remaining) [2021-08-30 16:03:18,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (44 of 64 remaining) [2021-08-30 16:03:18,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (43 of 64 remaining) [2021-08-30 16:03:18,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (42 of 64 remaining) [2021-08-30 16:03:18,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (41 of 64 remaining) [2021-08-30 16:03:18,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION (40 of 64 remaining) [2021-08-30 16:03:18,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (39 of 64 remaining) [2021-08-30 16:03:18,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (38 of 64 remaining) [2021-08-30 16:03:18,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION (37 of 64 remaining) [2021-08-30 16:03:18,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION (36 of 64 remaining) [2021-08-30 16:03:18,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (35 of 64 remaining) [2021-08-30 16:03:18,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (34 of 64 remaining) [2021-08-30 16:03:18,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29ASSERT_VIOLATIONMEMORY_LEAK (33 of 64 remaining) [2021-08-30 16:03:18,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (32 of 64 remaining) [2021-08-30 16:03:18,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION (31 of 64 remaining) [2021-08-30 16:03:18,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION (30 of 64 remaining) [2021-08-30 16:03:18,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION (29 of 64 remaining) [2021-08-30 16:03:18,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_LEAK (28 of 64 remaining) [2021-08-30 16:03:18,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION (27 of 64 remaining) [2021-08-30 16:03:18,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION (26 of 64 remaining) [2021-08-30 16:03:18,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION (25 of 64 remaining) [2021-08-30 16:03:18,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION (24 of 64 remaining) [2021-08-30 16:03:18,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39ASSERT_VIOLATIONMEMORY_LEAK (23 of 64 remaining) [2021-08-30 16:03:18,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION (22 of 64 remaining) [2021-08-30 16:03:18,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION (21 of 64 remaining) [2021-08-30 16:03:18,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION (20 of 64 remaining) [2021-08-30 16:03:18,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION (19 of 64 remaining) [2021-08-30 16:03:18,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION (18 of 64 remaining) [2021-08-30 16:03:18,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION (17 of 64 remaining) [2021-08-30 16:03:18,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION (16 of 64 remaining) [2021-08-30 16:03:18,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION (15 of 64 remaining) [2021-08-30 16:03:18,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49ASSERT_VIOLATIONMEMORY_FREE (14 of 64 remaining) [2021-08-30 16:03:18,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50ASSERT_VIOLATIONMEMORY_FREE (13 of 64 remaining) [2021-08-30 16:03:18,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE (12 of 64 remaining) [2021-08-30 16:03:18,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION (11 of 64 remaining) [2021-08-30 16:03:18,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53REQUIRES_VIOLATION (10 of 64 remaining) [2021-08-30 16:03:18,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54ASSERT_VIOLATIONMEMORY_LEAK (9 of 64 remaining) [2021-08-30 16:03:18,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION (8 of 64 remaining) [2021-08-30 16:03:18,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56REQUIRES_VIOLATION (7 of 64 remaining) [2021-08-30 16:03:18,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE (6 of 64 remaining) [2021-08-30 16:03:18,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE (5 of 64 remaining) [2021-08-30 16:03:18,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59ASSERT_VIOLATIONMEMORY_FREE (4 of 64 remaining) [2021-08-30 16:03:18,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60ASSERT_VIOLATIONMEMORY_FREE (3 of 64 remaining) [2021-08-30 16:03:18,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE (2 of 64 remaining) [2021-08-30 16:03:18,785 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE (1 of 64 remaining) [2021-08-30 16:03:18,785 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ENSURES_VIOLATIONMEMORY_LEAK (0 of 64 remaining) [2021-08-30 16:03:18,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-30 16:03:18,789 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 16:03:18,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:03:18 BoogieIcfgContainer [2021-08-30 16:03:18,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 16:03:18,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 16:03:18,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 16:03:18,807 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 16:03:18,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:10" (3/4) ... [2021-08-30 16:03:18,809 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 16:03:18,830 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 16:03:18,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 16:03:18,831 INFO L158 Benchmark]: Toolchain (without parser) took 8836.29ms. Allocated memory was 50.3MB in the beginning and 104.9MB in the end (delta: 54.5MB). Free memory was 26.1MB in the beginning and 66.9MB in the end (delta: -40.8MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2021-08-30 16:03:18,831 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.6MB in the beginning and 32.6MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:03:18,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.94ms. Allocated memory was 50.3MB in the beginning and 71.3MB in the end (delta: 21.0MB). Free memory was 25.9MB in the beginning and 51.5MB in the end (delta: -25.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-08-30 16:03:18,831 INFO L158 Benchmark]: Boogie Preprocessor took 72.57ms. Allocated memory is still 71.3MB. Free memory was 51.5MB in the beginning and 48.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 16:03:18,831 INFO L158 Benchmark]: RCFGBuilder took 418.01ms. Allocated memory is still 71.3MB. Free memory was 48.7MB in the beginning and 45.1MB in the end (delta: 3.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-08-30 16:03:18,832 INFO L158 Benchmark]: TraceAbstraction took 8013.15ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 44.5MB in the beginning and 70.1MB in the end (delta: -25.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-08-30 16:03:18,832 INFO L158 Benchmark]: Witness Printer took 23.11ms. Allocated memory is still 104.9MB. Free memory was 70.1MB in the beginning and 66.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 16:03:18,833 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 50.3MB. Free memory was 32.6MB in the beginning and 32.6MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.94ms. Allocated memory was 50.3MB in the beginning and 71.3MB in the end (delta: 21.0MB). Free memory was 25.9MB in the beginning and 51.5MB in the end (delta: -25.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.57ms. Allocated memory is still 71.3MB. Free memory was 51.5MB in the beginning and 48.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 418.01ms. Allocated memory is still 71.3MB. Free memory was 48.7MB in the beginning and 45.1MB in the end (delta: 3.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8013.15ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 44.5MB in the beginning and 70.1MB in the end (delta: -25.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Witness Printer took 23.11ms. Allocated memory is still 104.9MB. Free memory was 70.1MB in the beginning and 66.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 1037]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) VAL [head={-1:0}] [L1006] head->prev = ((void*)0) VAL [head={-1:0}] [L1007] head->data = 0 VAL [head={-1:0}] [L1009] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 VAL [head={-1:0}, x={-1:0}] [L1022] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1023] EXPR x->next VAL [head={-1:0}, x={-1:0}, x->next={-2:0}] [L1023] x->next->prev = x VAL [head={-1:0}, x={-1:0}, x->next={-2:0}] [L1024] EXPR x->next VAL [head={-1:0}, x={-1:0}, x->next={-2:0}] [L1024] x->next->data = 2 VAL [head={-1:0}, x={-1:0}, x->next={-2:0}] [L1026] x = head VAL [head={-1:0}, x={-1:0}] [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next VAL [head={-1:0}, x={-1:0}, x->next={-2:0}] [L1036] x = x->next [L1037] EXPR x->data VAL [head={-1:0}, x={-2:0}, x->data=2] [L1037] COND TRUE !(2 != x->data) [L1037] reach_error() VAL [head={-1:0}, x={-2:0}] - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 144 locations, 64 error locations. Started 1 CEGAR loops. OverallTime: 7955.45ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 14.48ms, AutomataDifference: 5811.71ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 11.10ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2365 SdHoareTripleChecker+Valid, 4538.69ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2365 mSDsluCounter, 287 SdHoareTripleChecker+Invalid, 3686.49ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3230 mSDsCounter, 341 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10941 IncrementalHoareTripleChecker+Invalid, 11282 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 341 mSolverCounterUnsat, 55 mSDtfsCounter, 10941 mSolverCounterSat, 54.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 240 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1495.91ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=4, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 108.43ms AutomataMinimizationTime, 18 MinimizatonAttempts, 463 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.82ms SsaConstructionTime, 232.66ms SatisfiabilityAnalysisTime, 1499.37ms InterpolantComputationTime, 392 NumberOfCodeBlocks, 392 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 340 ConstructedInterpolants, 0 QuantifiedInterpolants, 2468 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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! [2021-08-30 16:03:18,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...