./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg --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 4bb6c46a4de77c33ebd5db0d25fe513601ef52929336922ed8d1cb2e429dd77c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-dev-b2eff8b [2021-10-28 09:32:31,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:32:31,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:32:31,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:32:31,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:32:31,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:32:31,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:32:31,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:32:31,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:32:31,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:32:31,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:32:31,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:32:31,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:32:31,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:32:31,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:32:31,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:32:31,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:32:31,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:32:31,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:32:31,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:32:31,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:32:31,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:32:31,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:32:31,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:32:31,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:32:31,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:32:31,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:32:31,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:32:31,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:32:31,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:32:31,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:32:31,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:32:31,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:32:31,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:32:31,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:32:31,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:32:31,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:32:31,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:32:31,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:32:31,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:32:31,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:32:31,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 09:32:31,243 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:32:31,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:32:31,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:32:31,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:32:31,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:32:31,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:32:31,253 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:32:31,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:32:31,254 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:32:31,254 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:32:31,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:32:31,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:32:31,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:32:31,256 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:32:31,256 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:32:31,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:32:31,257 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:32:31,257 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:32:31,257 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:32:31,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:32:31,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:32:31,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:32:31,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:32:31,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:32:31,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:32:31,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:32:31,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:32:31,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:32:31,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bb6c46a4de77c33ebd5db0d25fe513601ef52929336922ed8d1cb2e429dd77c [2021-10-28 09:32:31,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:32:31,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:32:31,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:32:31,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:32:31,659 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:32:31,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2021-10-28 09:32:31,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/data/ffbb8883e/9010ae77f91c427a9028bfb18a068b49/FLAG607785f6f [2021-10-28 09:32:32,415 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:32:32,416 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2021-10-28 09:32:32,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/data/ffbb8883e/9010ae77f91c427a9028bfb18a068b49/FLAG607785f6f [2021-10-28 09:32:32,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/data/ffbb8883e/9010ae77f91c427a9028bfb18a068b49 [2021-10-28 09:32:32,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:32:32,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:32:32,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:32:32,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:32:32,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:32:32,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:32:32" (1/1) ... [2021-10-28 09:32:32,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a377cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:32, skipping insertion in model container [2021-10-28 09:32:32,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:32:32" (1/1) ... [2021-10-28 09:32:32,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:32:32,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:32:33,134 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i[22793,22806] [2021-10-28 09:32:33,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:32:33,153 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:32:33,200 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i[22793,22806] [2021-10-28 09:32:33,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:32:33,253 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:32:33,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:33 WrapperNode [2021-10-28 09:32:33,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:32:33,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:32:33,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:32:33,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:32:33,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:33" (1/1) ... [2021-10-28 09:32:33,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:33" (1/1) ... [2021-10-28 09:32:33,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:33" (1/1) ... [2021-10-28 09:32:33,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:33" (1/1) ... [2021-10-28 09:32:33,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:33" (1/1) ... [2021-10-28 09:32:33,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:33" (1/1) ... [2021-10-28 09:32:33,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:33" (1/1) ... [2021-10-28 09:32:33,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:32:33,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:32:33,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:32:33,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:32:33,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:33" (1/1) ... [2021-10-28 09:32:33,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:32:33,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:33,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:32:33,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:32:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:32:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:32:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:32:33,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:32:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:32:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:32:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:32:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:32:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:32:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:32:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:32:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:32:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:32:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:32:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:32:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:32:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:32:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:32:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:32:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:32:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:32:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:32:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:32:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:32:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:32:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:32:33,473 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:32:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:32:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:32:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:32:33,474 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:32:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:32:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:32:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:32:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:32:33,475 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:32:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:32:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:32:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:32:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:32:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:32:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:32:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:32:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:32:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:32:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:32:33,478 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:32:33,478 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:32:33,478 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:32:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:32:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:32:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:32:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:32:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:32:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:32:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:32:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:32:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:32:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:32:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:32:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:32:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:32:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:32:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:32:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:32:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:32:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:32:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:32:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:32:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:32:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:32:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:32:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:32:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:32:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:32:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:32:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:32:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:32:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:32:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:32:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:32:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:32:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:32:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:32:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:32:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:32:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:32:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:32:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:32:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:32:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:32:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:32:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:32:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:32:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:32:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:32:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:32:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:32:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:32:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:32:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:32:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:32:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:32:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:32:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:32:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:32:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:32:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:32:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:32:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:32:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:32:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:32:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:32:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:32:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:32:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:32:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:32:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:32:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:32:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:32:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:32:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:32:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:32:34,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:32:34,429 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 09:32:34,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:34 BoogieIcfgContainer [2021-10-28 09:32:34,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:32:34,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:32:34,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:32:34,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:32:34,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:32:32" (1/3) ... [2021-10-28 09:32:34,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39aa1031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:32:34, skipping insertion in model container [2021-10-28 09:32:34,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:33" (2/3) ... [2021-10-28 09:32:34,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39aa1031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:32:34, skipping insertion in model container [2021-10-28 09:32:34,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:34" (3/3) ... [2021-10-28 09:32:34,480 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-1.i [2021-10-28 09:32:34,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:32:34,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-10-28 09:32:34,541 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:32:34,548 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, mAutomataTypeConcurrency=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 [2021-10-28 09:32:34,548 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-10-28 09:32:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 127 states have internal predecessors, (144), 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) [2021-10-28 09:32:34,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:32:34,577 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:34,578 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:34,578 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:34,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:34,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1992649790, now seen corresponding path program 1 times [2021-10-28 09:32:34,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:34,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900646016] [2021-10-28 09:32:34,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:34,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:34,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:34,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:34,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900646016] [2021-10-28 09:32:34,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900646016] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:34,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:34,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:32:34,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522532228] [2021-10-28 09:32:34,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:32:34,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:34,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:32:34,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:32:34,847 INFO L87 Difference]: Start difference. First operand has 132 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 127 states have internal predecessors, (144), 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) [2021-10-28 09:32:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:35,229 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2021-10-28 09:32:35,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:32:35,231 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 [2021-10-28 09:32:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:35,241 INFO L225 Difference]: With dead ends: 158 [2021-10-28 09:32:35,242 INFO L226 Difference]: Without dead ends: 154 [2021-10-28 09:32:35,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:32:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-28 09:32:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 125. [2021-10-28 09:32:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 64 states have (on average 2.015625) internal successors, (129), 121 states have internal predecessors, (129), 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) [2021-10-28 09:32:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2021-10-28 09:32:35,286 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 7 [2021-10-28 09:32:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:35,286 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2021-10-28 09:32:35,287 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) [2021-10-28 09:32:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2021-10-28 09:32:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:32:35,287 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:35,287 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:35,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:32:35,288 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1992649789, now seen corresponding path program 1 times [2021-10-28 09:32:35,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:35,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223783646] [2021-10-28 09:32:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:35,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:35,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:35,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223783646] [2021-10-28 09:32:35,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223783646] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:35,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:35,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:32:35,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875745308] [2021-10-28 09:32:35,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:32:35,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:32:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:32:35,383 INFO L87 Difference]: Start difference. First operand 125 states and 132 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) [2021-10-28 09:32:35,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:35,763 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2021-10-28 09:32:35,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:32:35,764 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 [2021-10-28 09:32:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:35,766 INFO L225 Difference]: With dead ends: 151 [2021-10-28 09:32:35,766 INFO L226 Difference]: Without dead ends: 151 [2021-10-28 09:32:35,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:32:35,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-28 09:32:35,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 122. [2021-10-28 09:32:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 64 states have (on average 1.96875) internal successors, (126), 118 states have internal predecessors, (126), 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) [2021-10-28 09:32:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-10-28 09:32:35,779 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 7 [2021-10-28 09:32:35,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:35,780 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-10-28 09:32:35,781 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) [2021-10-28 09:32:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-10-28 09:32:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:32:35,782 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:35,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:35,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:32:35,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:35,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1651275756, now seen corresponding path program 1 times [2021-10-28 09:32:35,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:35,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652249255] [2021-10-28 09:32:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:35,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:35,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:35,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:35,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652249255] [2021-10-28 09:32:35,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652249255] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:35,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:35,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:32:35,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601512085] [2021-10-28 09:32:35,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:32:35,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:35,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:32:35,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:32:35,991 INFO L87 Difference]: Start difference. First operand 122 states and 129 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) [2021-10-28 09:32:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:36,459 INFO L93 Difference]: Finished difference Result 192 states and 206 transitions. [2021-10-28 09:32:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:32:36,461 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 [2021-10-28 09:32:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:36,463 INFO L225 Difference]: With dead ends: 192 [2021-10-28 09:32:36,463 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 09:32:36,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:32:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 09:32:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 155. [2021-10-28 09:32:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 100 states have (on average 1.91) internal successors, (191), 151 states have internal predecessors, (191), 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) [2021-10-28 09:32:36,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 194 transitions. [2021-10-28 09:32:36,499 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 194 transitions. Word has length 13 [2021-10-28 09:32:36,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:36,500 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 194 transitions. [2021-10-28 09:32:36,500 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) [2021-10-28 09:32:36,501 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 194 transitions. [2021-10-28 09:32:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:32:36,501 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:36,502 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:36,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:32:36,502 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:36,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:36,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1651275755, now seen corresponding path program 1 times [2021-10-28 09:32:36,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:36,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957146304] [2021-10-28 09:32:36,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:36,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:36,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:36,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:36,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957146304] [2021-10-28 09:32:36,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957146304] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:36,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:36,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:32:36,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754893094] [2021-10-28 09:32:36,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:32:36,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:36,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:32:36,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:32:36,613 INFO L87 Difference]: Start difference. First operand 155 states and 194 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) [2021-10-28 09:32:36,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:36,888 INFO L93 Difference]: Finished difference Result 153 states and 177 transitions. [2021-10-28 09:32:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:32:36,889 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 [2021-10-28 09:32:36,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:36,890 INFO L225 Difference]: With dead ends: 153 [2021-10-28 09:32:36,891 INFO L226 Difference]: Without dead ends: 153 [2021-10-28 09:32:36,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:32:36,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-28 09:32:36,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 146. [2021-10-28 09:32:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 107 states have (on average 1.6074766355140186) internal successors, (172), 142 states have internal predecessors, (172), 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) [2021-10-28 09:32:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 175 transitions. [2021-10-28 09:32:36,911 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 175 transitions. Word has length 13 [2021-10-28 09:32:36,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:36,911 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 175 transitions. [2021-10-28 09:32:36,912 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) [2021-10-28 09:32:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 175 transitions. [2021-10-28 09:32:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:32:36,912 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:36,913 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:36,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:32:36,913 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:36,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:36,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1399388165, now seen corresponding path program 1 times [2021-10-28 09:32:36,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:36,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332660703] [2021-10-28 09:32:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:36,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:37,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:37,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332660703] [2021-10-28 09:32:37,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332660703] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:37,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:37,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:32:37,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766324512] [2021-10-28 09:32:37,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:32:37,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:37,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:32:37,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:32:37,064 INFO L87 Difference]: Start difference. First operand 146 states and 175 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) [2021-10-28 09:32:37,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:37,350 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2021-10-28 09:32:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:32:37,350 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 [2021-10-28 09:32:37,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:37,354 INFO L225 Difference]: With dead ends: 145 [2021-10-28 09:32:37,354 INFO L226 Difference]: Without dead ends: 145 [2021-10-28 09:32:37,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:32:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-28 09:32:37,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-28 09:32:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 107 states have (on average 1.588785046728972) internal successors, (170), 141 states have internal predecessors, (170), 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) [2021-10-28 09:32:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 173 transitions. [2021-10-28 09:32:37,367 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 173 transitions. Word has length 16 [2021-10-28 09:32:37,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:37,367 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 173 transitions. [2021-10-28 09:32:37,367 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) [2021-10-28 09:32:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 173 transitions. [2021-10-28 09:32:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:32:37,376 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:37,376 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:37,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:32:37,376 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:37,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1399388164, now seen corresponding path program 1 times [2021-10-28 09:32:37,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:37,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253807980] [2021-10-28 09:32:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:37,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:37,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:37,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:37,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253807980] [2021-10-28 09:32:37,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253807980] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:37,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:37,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:32:37,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067676948] [2021-10-28 09:32:37,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:32:37,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:37,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:32:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:32:37,506 INFO L87 Difference]: Start difference. First operand 145 states and 173 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) [2021-10-28 09:32:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:37,767 INFO L93 Difference]: Finished difference Result 144 states and 171 transitions. [2021-10-28 09:32:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:32:37,768 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 [2021-10-28 09:32:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:37,770 INFO L225 Difference]: With dead ends: 144 [2021-10-28 09:32:37,770 INFO L226 Difference]: Without dead ends: 144 [2021-10-28 09:32:37,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:32:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-28 09:32:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-28 09:32:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 107 states have (on average 1.5700934579439252) internal successors, (168), 140 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) [2021-10-28 09:32:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2021-10-28 09:32:37,779 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 16 [2021-10-28 09:32:37,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:37,779 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2021-10-28 09:32:37,780 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) [2021-10-28 09:32:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2021-10-28 09:32:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:32:37,781 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:37,781 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] [2021-10-28 09:32:37,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:32:37,782 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr24REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:37,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1162376122, now seen corresponding path program 1 times [2021-10-28 09:32:37,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:37,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68092381] [2021-10-28 09:32:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:37,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:37,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:37,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68092381] [2021-10-28 09:32:37,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68092381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:37,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:37,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:32:37,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005167261] [2021-10-28 09:32:37,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:32:37,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:32:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:32:37,896 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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) [2021-10-28 09:32:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:38,191 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2021-10-28 09:32:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:32:38,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 [2021-10-28 09:32:38,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:38,193 INFO L225 Difference]: With dead ends: 152 [2021-10-28 09:32:38,193 INFO L226 Difference]: Without dead ends: 152 [2021-10-28 09:32:38,195 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:32:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-28 09:32:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2021-10-28 09:32:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 111 states have (on average 1.5585585585585586) internal successors, (173), 144 states have internal predecessors, (173), 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) [2021-10-28 09:32:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2021-10-28 09:32:38,230 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 20 [2021-10-28 09:32:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:38,231 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2021-10-28 09:32:38,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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) [2021-10-28 09:32:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2021-10-28 09:32:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:32:38,233 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:38,233 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] [2021-10-28 09:32:38,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:32:38,233 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr45REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:38,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1374943678, now seen corresponding path program 1 times [2021-10-28 09:32:38,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:38,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998825832] [2021-10-28 09:32:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:38,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:38,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:38,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998825832] [2021-10-28 09:32:38,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998825832] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:38,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:38,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:32:38,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955968069] [2021-10-28 09:32:38,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:32:38,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:38,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:32:38,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:32:38,404 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-10-28 09:32:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:38,710 INFO L93 Difference]: Finished difference Result 166 states and 190 transitions. [2021-10-28 09:32:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:32:38,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 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 [2021-10-28 09:32:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:38,721 INFO L225 Difference]: With dead ends: 166 [2021-10-28 09:32:38,722 INFO L226 Difference]: Without dead ends: 166 [2021-10-28 09:32:38,722 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:32:38,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-28 09:32:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2021-10-28 09:32:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 95 states have (on average 1.5052631578947369) internal successors, (143), 128 states have internal predecessors, (143), 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) [2021-10-28 09:32:38,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2021-10-28 09:32:38,727 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 20 [2021-10-28 09:32:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:38,728 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2021-10-28 09:32:38,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-10-28 09:32:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2021-10-28 09:32:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:32:38,729 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:38,729 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] [2021-10-28 09:32:38,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:32:38,730 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash -107919043, now seen corresponding path program 1 times [2021-10-28 09:32:38,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:38,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496402683] [2021-10-28 09:32:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:38,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:38,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:38,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496402683] [2021-10-28 09:32:38,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496402683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:38,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:38,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:32:38,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135907843] [2021-10-28 09:32:38,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:32:38,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:32:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:32:38,879 INFO L87 Difference]: Start difference. First operand 132 states and 146 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) [2021-10-28 09:32:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:39,401 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2021-10-28 09:32:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:32:39,402 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 [2021-10-28 09:32:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:39,403 INFO L225 Difference]: With dead ends: 136 [2021-10-28 09:32:39,404 INFO L226 Difference]: Without dead ends: 136 [2021-10-28 09:32:39,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:32:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-28 09:32:39,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2021-10-28 09:32:39,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 127 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) [2021-10-28 09:32:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2021-10-28 09:32:39,410 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 20 [2021-10-28 09:32:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:39,411 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2021-10-28 09:32:39,411 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) [2021-10-28 09:32:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2021-10-28 09:32:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:32:39,412 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:39,412 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] [2021-10-28 09:32:39,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:32:39,413 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:39,413 INFO L85 PathProgramCache]: Analyzing trace with hash -107919042, now seen corresponding path program 1 times [2021-10-28 09:32:39,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:39,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372570687] [2021-10-28 09:32:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:39,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:39,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:39,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:39,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372570687] [2021-10-28 09:32:39,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372570687] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:39,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:39,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:32:39,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36908957] [2021-10-28 09:32:39,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:32:39,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:39,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:32:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:32:39,638 INFO L87 Difference]: Start difference. First operand 131 states and 145 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) [2021-10-28 09:32:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:40,491 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2021-10-28 09:32:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:32:40,492 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 [2021-10-28 09:32:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:40,493 INFO L225 Difference]: With dead ends: 132 [2021-10-28 09:32:40,494 INFO L226 Difference]: Without dead ends: 132 [2021-10-28 09:32:40,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:32:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-28 09:32:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2021-10-28 09:32:40,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 89 states have (on average 1.4719101123595506) internal successors, (131), 116 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) [2021-10-28 09:32:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2021-10-28 09:32:40,500 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 20 [2021-10-28 09:32:40,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:40,501 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2021-10-28 09:32:40,501 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) [2021-10-28 09:32:40,501 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2021-10-28 09:32:40,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:32:40,502 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:40,503 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] [2021-10-28 09:32:40,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:32:40,503 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr34REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:40,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:40,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1934707260, now seen corresponding path program 1 times [2021-10-28 09:32:40,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:40,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240116873] [2021-10-28 09:32:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:40,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:40,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:40,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240116873] [2021-10-28 09:32:40,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240116873] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:40,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:40,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:32:40,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945735508] [2021-10-28 09:32:40,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:32:40,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:40,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:32:40,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:32:40,603 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-10-28 09:32:40,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:40,946 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2021-10-28 09:32:40,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:32:40,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 23 [2021-10-28 09:32:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:40,948 INFO L225 Difference]: With dead ends: 120 [2021-10-28 09:32:40,948 INFO L226 Difference]: Without dead ends: 120 [2021-10-28 09:32:40,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:32:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-28 09:32:40,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2021-10-28 09:32:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 115 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) [2021-10-28 09:32:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2021-10-28 09:32:40,952 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 23 [2021-10-28 09:32:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:40,953 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2021-10-28 09:32:40,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-10-28 09:32:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2021-10-28 09:32:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:32:40,954 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:40,954 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] [2021-10-28 09:32:40,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:32:40,954 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr35REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1934707261, now seen corresponding path program 1 times [2021-10-28 09:32:40,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:40,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251924838] [2021-10-28 09:32:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:40,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:41,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:41,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251924838] [2021-10-28 09:32:41,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251924838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:41,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:41,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:32:41,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189569915] [2021-10-28 09:32:41,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:32:41,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:41,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:32:41,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:32:41,082 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-10-28 09:32:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:41,418 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-10-28 09:32:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:32:41,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 23 [2021-10-28 09:32:41,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:41,421 INFO L225 Difference]: With dead ends: 116 [2021-10-28 09:32:41,421 INFO L226 Difference]: Without dead ends: 116 [2021-10-28 09:32:41,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:32:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-28 09:32:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-28 09:32:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 89 states have (on average 1.4269662921348314) internal successors, (127), 112 states have internal predecessors, (127), 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) [2021-10-28 09:32:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2021-10-28 09:32:41,426 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 23 [2021-10-28 09:32:41,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:41,427 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2021-10-28 09:32:41,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-10-28 09:32:41,427 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2021-10-28 09:32:41,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:32:41,432 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:41,432 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] [2021-10-28 09:32:41,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:32:41,433 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr44REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:41,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash 543206775, now seen corresponding path program 1 times [2021-10-28 09:32:41,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:41,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394606918] [2021-10-28 09:32:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:41,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:41,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:41,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394606918] [2021-10-28 09:32:41,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394606918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:41,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607780261] [2021-10-28 09:32:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:41,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:41,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:41,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:41,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:32:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:41,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:32:41,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:41,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:32:41,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:32:41,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-28 09:32:41,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:32:41,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-28 09:32:42,234 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:32:42,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-10-28 09:32:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:42,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607780261] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:42,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:42,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2021-10-28 09:32:42,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130049302] [2021-10-28 09:32:42,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:32:42,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:42,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:32:42,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:32:42,325 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:32:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:42,871 INFO L93 Difference]: Finished difference Result 147 states and 162 transitions. [2021-10-28 09:32:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:32:42,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 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 [2021-10-28 09:32:42,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:42,873 INFO L225 Difference]: With dead ends: 147 [2021-10-28 09:32:42,874 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 09:32:42,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:32:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 09:32:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2021-10-28 09:32:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 115 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) [2021-10-28 09:32:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2021-10-28 09:32:42,880 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 24 [2021-10-28 09:32:42,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:42,880 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2021-10-28 09:32:42,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:32:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2021-10-28 09:32:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:32:42,882 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:42,882 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:42,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:43,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:43,102 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr50REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:43,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:43,103 INFO L85 PathProgramCache]: Analyzing trace with hash -342089969, now seen corresponding path program 1 times [2021-10-28 09:32:43,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:43,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038536385] [2021-10-28 09:32:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:43,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:43,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:43,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:43,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038536385] [2021-10-28 09:32:43,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038536385] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:43,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:43,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:32:43,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91977657] [2021-10-28 09:32:43,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:32:43,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:43,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:32:43,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:32:43,276 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-10-28 09:32:43,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:43,772 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2021-10-28 09:32:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:32:43,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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 25 [2021-10-28 09:32:43,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:43,775 INFO L225 Difference]: With dead ends: 148 [2021-10-28 09:32:43,775 INFO L226 Difference]: Without dead ends: 148 [2021-10-28 09:32:43,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:32:43,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-28 09:32:43,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 120. [2021-10-28 09:32:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 116 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) [2021-10-28 09:32:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2021-10-28 09:32:43,780 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 25 [2021-10-28 09:32:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:43,781 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2021-10-28 09:32:43,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-10-28 09:32:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2021-10-28 09:32:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:32:43,782 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:43,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:43,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 09:32:43,782 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr51REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:43,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:43,783 INFO L85 PathProgramCache]: Analyzing trace with hash -342089968, now seen corresponding path program 1 times [2021-10-28 09:32:43,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:43,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238220379] [2021-10-28 09:32:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:43,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:44,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:44,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238220379] [2021-10-28 09:32:44,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238220379] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:44,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:44,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:32:44,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372592900] [2021-10-28 09:32:44,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:32:44,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:44,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:32:44,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:32:44,034 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-10-28 09:32:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:44,666 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2021-10-28 09:32:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:32:44,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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 25 [2021-10-28 09:32:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:44,670 INFO L225 Difference]: With dead ends: 165 [2021-10-28 09:32:44,670 INFO L226 Difference]: Without dead ends: 165 [2021-10-28 09:32:44,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:32:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-28 09:32:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 122. [2021-10-28 09:32:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 118 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) [2021-10-28 09:32:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 137 transitions. [2021-10-28 09:32:44,676 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 137 transitions. Word has length 25 [2021-10-28 09:32:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:44,677 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 137 transitions. [2021-10-28 09:32:44,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-10-28 09:32:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 137 transitions. [2021-10-28 09:32:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:32:44,678 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:44,678 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] [2021-10-28 09:32:44,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 09:32:44,679 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr38REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:44,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1597051052, now seen corresponding path program 1 times [2021-10-28 09:32:44,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:44,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873206346] [2021-10-28 09:32:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:44,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:32:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:44,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:44,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873206346] [2021-10-28 09:32:44,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873206346] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:44,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:44,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:32:44,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120431527] [2021-10-28 09:32:44,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:32:44,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:44,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:32:44,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:32:44,784 INFO L87 Difference]: Start difference. First operand 122 states and 137 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-10-28 09:32:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:45,185 INFO L93 Difference]: Finished difference Result 184 states and 203 transitions. [2021-10-28 09:32:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:32:45,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 26 [2021-10-28 09:32:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:45,187 INFO L225 Difference]: With dead ends: 184 [2021-10-28 09:32:45,187 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 09:32:45,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:32:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 09:32:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 136. [2021-10-28 09:32:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 110 states have (on average 1.3727272727272728) internal successors, (151), 132 states have internal predecessors, (151), 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) [2021-10-28 09:32:45,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 154 transitions. [2021-10-28 09:32:45,199 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 154 transitions. Word has length 26 [2021-10-28 09:32:45,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:45,199 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 154 transitions. [2021-10-28 09:32:45,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-10-28 09:32:45,200 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 154 transitions. [2021-10-28 09:32:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:32:45,203 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:45,204 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] [2021-10-28 09:32:45,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 09:32:45,205 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr52ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-10-28 09:32:45,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:45,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1964025940, now seen corresponding path program 1 times [2021-10-28 09:32:45,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:45,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298741892] [2021-10-28 09:32:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:45,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:32:45,239 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:32:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:32:45,317 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:32:45,318 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:32:45,319 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr52ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:32:45,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:32:45,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:32:45,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:32:45,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:32:45,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:32:45,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:32:45,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:32:45,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:32:45,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:32:45,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:32:45,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:32:45,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:32:45,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:32:45,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:32:45,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:32:45,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:32:45,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:32:45,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:32:45,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:32:45,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:32:45,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 09:32:45,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 09:32:45,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 09:32:45,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 09:32:45,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 09:32:45,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 09:32:45,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 09:32:45,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 09:32:45,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 09:32:45,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 09:32:45,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 09:32:45,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 09:32:45,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-28 09:32:45,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 09:32:45,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-28 09:32:45,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-28 09:32:45,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 09:32:45,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 09:32:45,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 09:32:45,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 09:32:45,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-28 09:32:45,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-28 09:32:45,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-28 09:32:45,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-10-28 09:32:45,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-10-28 09:32:45,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-28 09:32:45,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-28 09:32:45,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-28 09:32:45,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-10-28 09:32:45,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 09:32:45,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 09:32:45,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION [2021-10-28 09:32:45,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53REQUIRES_VIOLATION [2021-10-28 09:32:45,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-28 09:32:45,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-28 09:32:45,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56REQUIRES_VIOLATION [2021-10-28 09:32:45,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:32:45,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:32:45,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:32:45,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:32:45,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 09:32:45,347 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:45,354 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:32:45,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:32:45 BoogieIcfgContainer [2021-10-28 09:32:45,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:32:45,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:32:45,385 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:32:45,385 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:32:45,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:34" (3/4) ... [2021-10-28 09:32:45,388 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:32:45,436 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:32:45,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:32:45,437 INFO L168 Benchmark]: Toolchain (without parser) took 12788.54 ms. Allocated memory was 96.5 MB in the beginning and 197.1 MB in the end (delta: 100.7 MB). Free memory was 59.6 MB in the beginning and 148.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:45,438 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory was 66.9 MB in the beginning and 66.9 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:32:45,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.45 ms. Allocated memory is still 96.5 MB. Free memory was 59.2 MB in the beginning and 65.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:45,439 INFO L168 Benchmark]: Boogie Preprocessor took 112.47 ms. Allocated memory is still 96.5 MB. Free memory was 65.3 MB in the beginning and 62.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:45,440 INFO L168 Benchmark]: RCFGBuilder took 1064.70 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 62.5 MB in the beginning and 101.3 MB in the end (delta: -38.8 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:45,440 INFO L168 Benchmark]: TraceAbstraction took 10948.15 ms. Allocated memory was 127.9 MB in the beginning and 197.1 MB in the end (delta: 69.2 MB). Free memory was 100.9 MB in the beginning and 150.9 MB in the end (delta: -50.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:45,441 INFO L168 Benchmark]: Witness Printer took 51.65 ms. Allocated memory is still 197.1 MB. Free memory was 150.9 MB in the beginning and 148.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:45,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory was 66.9 MB in the beginning and 66.9 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 601.45 ms. Allocated memory is still 96.5 MB. Free memory was 59.2 MB in the beginning and 65.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 112.47 ms. Allocated memory is still 96.5 MB. Free memory was 65.3 MB in the beginning and 62.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1064.70 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 62.5 MB in the beginning and 101.3 MB in the end (delta: -38.8 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10948.15 ms. Allocated memory was 127.9 MB in the beginning and 197.1 MB in the end (delta: 69.2 MB). Free memory was 100.9 MB in the beginning and 150.9 MB in the end (delta: -50.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * Witness Printer took 51.65 ms. Allocated memory is still 197.1 MB. Free memory was 150.9 MB in the beginning and 148.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1063]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1000] SLL* head = malloc(sizeof(SLL)); [L1001] head->next = ((void*)0) VAL [head={-1:0}] [L1002] head->prev = ((void*)0) VAL [head={-1:0}] [L1003] head->data = 0 VAL [head={-1:0}] [L1005] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1019] COND TRUE __VERIFIER_nondet_int() [L1020] x = malloc(sizeof(SLL)) [L1021] x->data = 1 VAL [head={-1:0}, x={-2:0}] [L1022] x->next = head VAL [head={-1:0}, x={-2:0}] [L1023] x->prev = ((void*)0) VAL [head={-1:0}, x={-2:0}] [L1024] head = x VAL [head={-2:0}, x={-2:0}] [L1050] x = head VAL [head={-2:0}, x={-2:0}] [L1053] EXPR x->data VAL [head={-2:0}, x={-2:0}, x->data=1] [L1053] COND FALSE !(x->data != 1) [L1059] EXPR x->next VAL [head={-2:0}, x={-2:0}, x->next={-1:0}] [L1059] x = x->next [L1060] COND TRUE \read(*x) VAL [head={-2:0}, x={-1:0}] [L1062] EXPR x->data VAL [head={-2:0}, x={-1:0}, x->data=0] [L1062] COND TRUE x->data != 1 [L1063] reach_error() VAL [head={-2:0}, x={-1:0}] - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1011]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1011]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: 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: 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: 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: 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: 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: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: 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: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1053]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1053]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 997]: 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, 135 locations, 61 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1194 SDtfs, 1790 SDslu, 2133 SDs, 0 SdLazy, 5547 SolverSat, 338 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 56 SyntacticMatches, 10 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=3, InterpolantAutomatonStates: 134, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 304 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 349 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 305 ConstructedInterpolants, 2 QuantifiedInterpolants, 2117 SizeOfPredicates, 6 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 17 InterpolantComputations, 16 PerfectInterpolantSequences, 2/3 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! [2021-10-28 09:32:45,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36955d60-3d97-4319-8382-85e89aa99710/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...