./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a6bc1adbcafb13db44c5d4b4826990150e2f336 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:19:40,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:19:40,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:19:41,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:19:41,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:19:41,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:19:41,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:19:41,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:19:41,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:19:41,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:19:41,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:19:41,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:19:41,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:19:41,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:19:41,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:19:41,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:19:41,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:19:41,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:19:41,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:19:41,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:19:41,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:19:41,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:19:41,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:19:41,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:19:41,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:19:41,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:19:41,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:19:41,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:19:41,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:19:41,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:19:41,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:19:41,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:19:41,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:19:41,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:19:41,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:19:41,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:19:41,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:19:41,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:19:41,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:19:41,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:19:41,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:19:41,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:19:41,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:19:41,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:19:41,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:19:41,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:19:41,179 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:19:41,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:19:41,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:19:41,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:19:41,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:19:41,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:19:41,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:19:41,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:19:41,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:19:41,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:19:41,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:19:41,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:19:41,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:19:41,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:19:41,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:19:41,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:19:41,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:19:41,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:41,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:19:41,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:19:41,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:19:41,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:19:41,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:19:41,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:19:41,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:19:41,188 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-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6bc1adbcafb13db44c5d4b4826990150e2f336 [2020-11-28 03:19:41,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:19:41,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:19:41,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:19:41,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:19:41,588 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:19:41,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_6.c [2020-11-28 03:19:41,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/data/f0a5c912b/c88d91fec0104232b65e22ae281b6e2b/FLAG4623d9f4f [2020-11-28 03:19:42,296 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:19:42,303 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/sv-benchmarks/c/locks/test_locks_6.c [2020-11-28 03:19:42,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/data/f0a5c912b/c88d91fec0104232b65e22ae281b6e2b/FLAG4623d9f4f [2020-11-28 03:19:42,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/data/f0a5c912b/c88d91fec0104232b65e22ae281b6e2b [2020-11-28 03:19:42,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:19:42,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:19:42,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:42,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:19:42,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:19:42,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:42" (1/1) ... [2020-11-28 03:19:42,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6270adfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:42, skipping insertion in model container [2020-11-28 03:19:42,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:42" (1/1) ... [2020-11-28 03:19:42,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:19:42,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:19:42,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:43,013 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:19:43,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:43,093 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:19:43,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43 WrapperNode [2020-11-28 03:19:43,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:43,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:43,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:19:43,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:19:43,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (1/1) ... [2020-11-28 03:19:43,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (1/1) ... [2020-11-28 03:19:43,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:43,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:19:43,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:19:43,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:19:43,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (1/1) ... [2020-11-28 03:19:43,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (1/1) ... [2020-11-28 03:19:43,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (1/1) ... [2020-11-28 03:19:43,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (1/1) ... [2020-11-28 03:19:43,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (1/1) ... [2020-11-28 03:19:43,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (1/1) ... [2020-11-28 03:19:43,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (1/1) ... [2020-11-28 03:19:43,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:19:43,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:19:43,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:19:43,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:19:43,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:19:43,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:19:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:19:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:19:43,703 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:19:43,703 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 03:19:43,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:43 BoogieIcfgContainer [2020-11-28 03:19:43,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:19:43,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:19:43,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:19:43,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:19:43,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:19:42" (1/3) ... [2020-11-28 03:19:43,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77eda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:43, skipping insertion in model container [2020-11-28 03:19:43,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:43" (2/3) ... [2020-11-28 03:19:43,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77eda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:43, skipping insertion in model container [2020-11-28 03:19:43,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:43" (3/3) ... [2020-11-28 03:19:43,739 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-11-28 03:19:43,768 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:19:43,774 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:19:43,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:19:43,842 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:19:43,842 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:19:43,843 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:19:43,843 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:19:43,843 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:19:43,843 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:19:43,844 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:19:43,844 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:19:43,863 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-28 03:19:43,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:19:43,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:43,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:43,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:43,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:43,882 INFO L82 PathProgramCache]: Analyzing trace with hash -721193823, now seen corresponding path program 1 times [2020-11-28 03:19:43,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:43,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697624849] [2020-11-28 03:19:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:44,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697624849] [2020-11-28 03:19:44,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:44,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:44,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374668265] [2020-11-28 03:19:44,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:44,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:44,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:44,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:44,259 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-11-28 03:19:44,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:44,361 INFO L93 Difference]: Finished difference Result 60 states and 98 transitions. [2020-11-28 03:19:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:44,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-28 03:19:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:44,378 INFO L225 Difference]: With dead ends: 60 [2020-11-28 03:19:44,378 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 03:19:44,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:44,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 03:19:44,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2020-11-28 03:19:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:19:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2020-11-28 03:19:44,448 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 13 [2020-11-28 03:19:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:44,449 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2020-11-28 03:19:44,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2020-11-28 03:19:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:19:44,453 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:44,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:44,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:19:44,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:44,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:44,458 INFO L82 PathProgramCache]: Analyzing trace with hash -41135453, now seen corresponding path program 1 times [2020-11-28 03:19:44,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:44,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909550549] [2020-11-28 03:19:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:44,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909550549] [2020-11-28 03:19:44,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:44,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:44,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693427030] [2020-11-28 03:19:44,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:44,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:44,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:44,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:44,555 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 3 states. [2020-11-28 03:19:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:44,603 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2020-11-28 03:19:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:44,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-28 03:19:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:44,605 INFO L225 Difference]: With dead ends: 74 [2020-11-28 03:19:44,605 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 03:19:44,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:44,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 03:19:44,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-11-28 03:19:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 03:19:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 74 transitions. [2020-11-28 03:19:44,615 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 74 transitions. Word has length 13 [2020-11-28 03:19:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:44,616 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 74 transitions. [2020-11-28 03:19:44,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 74 transitions. [2020-11-28 03:19:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:19:44,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:44,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:44,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:19:44,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash -881957389, now seen corresponding path program 1 times [2020-11-28 03:19:44,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:44,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966201833] [2020-11-28 03:19:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:44,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966201833] [2020-11-28 03:19:44,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:44,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:44,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870282946] [2020-11-28 03:19:44,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:44,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:44,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:44,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:44,682 INFO L87 Difference]: Start difference. First operand 43 states and 74 transitions. Second operand 3 states. [2020-11-28 03:19:44,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:44,714 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2020-11-28 03:19:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:44,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-28 03:19:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:44,718 INFO L225 Difference]: With dead ends: 69 [2020-11-28 03:19:44,718 INFO L226 Difference]: Without dead ends: 48 [2020-11-28 03:19:44,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:44,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-28 03:19:44,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-11-28 03:19:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 03:19:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 76 transitions. [2020-11-28 03:19:44,736 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 76 transitions. Word has length 14 [2020-11-28 03:19:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:44,736 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 76 transitions. [2020-11-28 03:19:44,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2020-11-28 03:19:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:19:44,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:44,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:44,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:19:44,739 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:44,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:44,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1274984399, now seen corresponding path program 1 times [2020-11-28 03:19:44,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:44,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763156254] [2020-11-28 03:19:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:44,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763156254] [2020-11-28 03:19:44,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:44,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:44,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401159596] [2020-11-28 03:19:44,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:44,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:44,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:44,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:44,795 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand 3 states. [2020-11-28 03:19:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:44,827 INFO L93 Difference]: Finished difference Result 85 states and 141 transitions. [2020-11-28 03:19:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:44,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-28 03:19:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:44,829 INFO L225 Difference]: With dead ends: 85 [2020-11-28 03:19:44,829 INFO L226 Difference]: Without dead ends: 83 [2020-11-28 03:19:44,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:44,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-28 03:19:44,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2020-11-28 03:19:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-28 03:19:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 101 transitions. [2020-11-28 03:19:44,841 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 101 transitions. Word has length 14 [2020-11-28 03:19:44,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:44,842 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 101 transitions. [2020-11-28 03:19:44,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 101 transitions. [2020-11-28 03:19:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:19:44,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:44,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:44,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:19:44,848 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:44,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:44,849 INFO L82 PathProgramCache]: Analyzing trace with hash -594926029, now seen corresponding path program 1 times [2020-11-28 03:19:44,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:44,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257593751] [2020-11-28 03:19:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:44,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257593751] [2020-11-28 03:19:44,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:44,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:44,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567855337] [2020-11-28 03:19:44,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:44,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:44,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:44,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:44,936 INFO L87 Difference]: Start difference. First operand 61 states and 101 transitions. Second operand 3 states. [2020-11-28 03:19:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:44,974 INFO L93 Difference]: Finished difference Result 141 states and 235 transitions. [2020-11-28 03:19:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:44,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-28 03:19:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:44,977 INFO L225 Difference]: With dead ends: 141 [2020-11-28 03:19:44,977 INFO L226 Difference]: Without dead ends: 85 [2020-11-28 03:19:44,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:44,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-28 03:19:44,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-11-28 03:19:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-28 03:19:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 135 transitions. [2020-11-28 03:19:45,006 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 135 transitions. Word has length 14 [2020-11-28 03:19:45,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:45,007 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 135 transitions. [2020-11-28 03:19:45,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:45,007 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 135 transitions. [2020-11-28 03:19:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:19:45,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:45,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:45,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:19:45,010 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:45,011 INFO L82 PathProgramCache]: Analyzing trace with hash -869595720, now seen corresponding path program 1 times [2020-11-28 03:19:45,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:45,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190859861] [2020-11-28 03:19:45,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:45,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190859861] [2020-11-28 03:19:45,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:45,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:45,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625301960] [2020-11-28 03:19:45,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:45,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:45,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:45,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,110 INFO L87 Difference]: Start difference. First operand 83 states and 135 transitions. Second operand 3 states. [2020-11-28 03:19:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:45,146 INFO L93 Difference]: Finished difference Result 126 states and 202 transitions. [2020-11-28 03:19:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:45,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-28 03:19:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:45,149 INFO L225 Difference]: With dead ends: 126 [2020-11-28 03:19:45,149 INFO L226 Difference]: Without dead ends: 87 [2020-11-28 03:19:45,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-28 03:19:45,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-11-28 03:19:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 03:19:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions. [2020-11-28 03:19:45,171 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 15 [2020-11-28 03:19:45,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:45,175 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 135 transitions. [2020-11-28 03:19:45,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:45,176 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions. [2020-11-28 03:19:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:19:45,178 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:45,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:45,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:19:45,179 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:45,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1262622730, now seen corresponding path program 1 times [2020-11-28 03:19:45,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:45,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487597039] [2020-11-28 03:19:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:45,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487597039] [2020-11-28 03:19:45,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:45,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:45,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307641318] [2020-11-28 03:19:45,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:45,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:45,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:45,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,271 INFO L87 Difference]: Start difference. First operand 85 states and 135 transitions. Second operand 3 states. [2020-11-28 03:19:45,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:45,312 INFO L93 Difference]: Finished difference Result 237 states and 377 transitions. [2020-11-28 03:19:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:45,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-28 03:19:45,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:45,314 INFO L225 Difference]: With dead ends: 237 [2020-11-28 03:19:45,315 INFO L226 Difference]: Without dead ends: 159 [2020-11-28 03:19:45,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-28 03:19:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-11-28 03:19:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-28 03:19:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 243 transitions. [2020-11-28 03:19:45,353 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 243 transitions. Word has length 15 [2020-11-28 03:19:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:45,354 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 243 transitions. [2020-11-28 03:19:45,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 243 transitions. [2020-11-28 03:19:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:19:45,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:45,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:45,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:19:45,356 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1942681100, now seen corresponding path program 1 times [2020-11-28 03:19:45,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:45,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605811760] [2020-11-28 03:19:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:45,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605811760] [2020-11-28 03:19:45,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:45,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:45,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436666017] [2020-11-28 03:19:45,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:45,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:45,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:45,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,396 INFO L87 Difference]: Start difference. First operand 157 states and 243 transitions. Second operand 3 states. [2020-11-28 03:19:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:45,417 INFO L93 Difference]: Finished difference Result 193 states and 301 transitions. [2020-11-28 03:19:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:45,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-28 03:19:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:45,420 INFO L225 Difference]: With dead ends: 193 [2020-11-28 03:19:45,420 INFO L226 Difference]: Without dead ends: 191 [2020-11-28 03:19:45,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-28 03:19:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-11-28 03:19:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-28 03:19:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2020-11-28 03:19:45,448 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 15 [2020-11-28 03:19:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:45,448 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2020-11-28 03:19:45,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:45,448 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2020-11-28 03:19:45,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:19:45,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:45,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:45,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:19:45,450 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash -486383640, now seen corresponding path program 1 times [2020-11-28 03:19:45,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:45,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857156627] [2020-11-28 03:19:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:45,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857156627] [2020-11-28 03:19:45,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:45,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:45,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475268687] [2020-11-28 03:19:45,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:45,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:45,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:45,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,527 INFO L87 Difference]: Start difference. First operand 157 states and 239 transitions. Second operand 3 states. [2020-11-28 03:19:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:45,578 INFO L93 Difference]: Finished difference Result 277 states and 425 transitions. [2020-11-28 03:19:45,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:45,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-28 03:19:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:45,584 INFO L225 Difference]: With dead ends: 277 [2020-11-28 03:19:45,585 INFO L226 Difference]: Without dead ends: 275 [2020-11-28 03:19:45,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-11-28 03:19:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 225. [2020-11-28 03:19:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-11-28 03:19:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-11-28 03:19:45,623 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 16 [2020-11-28 03:19:45,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:45,623 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-11-28 03:19:45,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:45,623 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-11-28 03:19:45,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:19:45,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:45,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:45,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:19:45,626 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:45,627 INFO L82 PathProgramCache]: Analyzing trace with hash 193674730, now seen corresponding path program 1 times [2020-11-28 03:19:45,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:45,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928899013] [2020-11-28 03:19:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:45,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928899013] [2020-11-28 03:19:45,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:45,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:45,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051265674] [2020-11-28 03:19:45,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:45,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:45,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:45,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,690 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 3 states. [2020-11-28 03:19:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:45,722 INFO L93 Difference]: Finished difference Result 517 states and 769 transitions. [2020-11-28 03:19:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:45,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-28 03:19:45,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:45,726 INFO L225 Difference]: With dead ends: 517 [2020-11-28 03:19:45,726 INFO L226 Difference]: Without dead ends: 299 [2020-11-28 03:19:45,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-28 03:19:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2020-11-28 03:19:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-11-28 03:19:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2020-11-28 03:19:45,754 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 16 [2020-11-28 03:19:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:45,754 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2020-11-28 03:19:45,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2020-11-28 03:19:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:19:45,757 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:45,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:45,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:19:45,758 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:45,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:45,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2102192011, now seen corresponding path program 1 times [2020-11-28 03:19:45,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:45,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471931754] [2020-11-28 03:19:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:45,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471931754] [2020-11-28 03:19:45,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:45,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:45,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189147825] [2020-11-28 03:19:45,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:45,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:45,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:45,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,817 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand 3 states. [2020-11-28 03:19:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:45,847 INFO L93 Difference]: Finished difference Result 453 states and 649 transitions. [2020-11-28 03:19:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:45,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:19:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:45,851 INFO L225 Difference]: With dead ends: 453 [2020-11-28 03:19:45,851 INFO L226 Difference]: Without dead ends: 311 [2020-11-28 03:19:45,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-11-28 03:19:45,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2020-11-28 03:19:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-11-28 03:19:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 435 transitions. [2020-11-28 03:19:45,869 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 435 transitions. Word has length 17 [2020-11-28 03:19:45,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:45,870 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 435 transitions. [2020-11-28 03:19:45,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 435 transitions. [2020-11-28 03:19:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:19:45,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:45,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:45,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:19:45,872 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:45,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:45,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1709165001, now seen corresponding path program 1 times [2020-11-28 03:19:45,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:45,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170994893] [2020-11-28 03:19:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:45,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170994893] [2020-11-28 03:19:45,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:45,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:45,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709782078] [2020-11-28 03:19:45,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:45,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:45,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:45,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,923 INFO L87 Difference]: Start difference. First operand 309 states and 435 transitions. Second operand 3 states. [2020-11-28 03:19:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:45,960 INFO L93 Difference]: Finished difference Result 521 states and 733 transitions. [2020-11-28 03:19:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:45,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:19:45,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:45,965 INFO L225 Difference]: With dead ends: 521 [2020-11-28 03:19:45,966 INFO L226 Difference]: Without dead ends: 519 [2020-11-28 03:19:45,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-11-28 03:19:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 453. [2020-11-28 03:19:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-11-28 03:19:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 619 transitions. [2020-11-28 03:19:45,988 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 619 transitions. Word has length 17 [2020-11-28 03:19:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:45,989 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 619 transitions. [2020-11-28 03:19:45,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:45,989 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 619 transitions. [2020-11-28 03:19:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:19:45,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:45,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:45,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:19:45,991 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:45,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:45,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1905743925, now seen corresponding path program 1 times [2020-11-28 03:19:45,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:45,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691537075] [2020-11-28 03:19:45,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:46,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691537075] [2020-11-28 03:19:46,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:46,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:46,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881369948] [2020-11-28 03:19:46,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:46,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:46,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:46,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:46,043 INFO L87 Difference]: Start difference. First operand 453 states and 619 transitions. Second operand 3 states. [2020-11-28 03:19:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:46,083 INFO L93 Difference]: Finished difference Result 1017 states and 1373 transitions. [2020-11-28 03:19:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:46,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:19:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:46,088 INFO L225 Difference]: With dead ends: 1017 [2020-11-28 03:19:46,088 INFO L226 Difference]: Without dead ends: 583 [2020-11-28 03:19:46,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-11-28 03:19:46,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2020-11-28 03:19:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-11-28 03:19:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 755 transitions. [2020-11-28 03:19:46,116 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 755 transitions. Word has length 17 [2020-11-28 03:19:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:46,116 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 755 transitions. [2020-11-28 03:19:46,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 755 transitions. [2020-11-28 03:19:46,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:19:46,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:46,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:46,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:19:46,119 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:46,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1444723487, now seen corresponding path program 1 times [2020-11-28 03:19:46,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111263750] [2020-11-28 03:19:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:46,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111263750] [2020-11-28 03:19:46,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:46,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:46,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911322541] [2020-11-28 03:19:46,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:46,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:46,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:46,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:46,150 INFO L87 Difference]: Start difference. First operand 581 states and 755 transitions. Second operand 3 states. [2020-11-28 03:19:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:46,181 INFO L93 Difference]: Finished difference Result 873 states and 1125 transitions. [2020-11-28 03:19:46,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:46,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-28 03:19:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:46,186 INFO L225 Difference]: With dead ends: 873 [2020-11-28 03:19:46,186 INFO L226 Difference]: Without dead ends: 599 [2020-11-28 03:19:46,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-11-28 03:19:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-11-28 03:19:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-11-28 03:19:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 755 transitions. [2020-11-28 03:19:46,216 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 755 transitions. Word has length 18 [2020-11-28 03:19:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:46,219 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 755 transitions. [2020-11-28 03:19:46,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 755 transitions. [2020-11-28 03:19:46,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:19:46,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:46,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:46,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 03:19:46,221 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1051696477, now seen corresponding path program 1 times [2020-11-28 03:19:46,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113080992] [2020-11-28 03:19:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:46,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113080992] [2020-11-28 03:19:46,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:46,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:46,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653315655] [2020-11-28 03:19:46,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:46,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:46,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:46,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:46,269 INFO L87 Difference]: Start difference. First operand 597 states and 755 transitions. Second operand 3 states. [2020-11-28 03:19:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:46,303 INFO L93 Difference]: Finished difference Result 967 states and 1204 transitions. [2020-11-28 03:19:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:46,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-28 03:19:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:46,311 INFO L225 Difference]: With dead ends: 967 [2020-11-28 03:19:46,311 INFO L226 Difference]: Without dead ends: 965 [2020-11-28 03:19:46,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:46,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-11-28 03:19:46,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 901. [2020-11-28 03:19:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-11-28 03:19:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1107 transitions. [2020-11-28 03:19:46,351 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1107 transitions. Word has length 18 [2020-11-28 03:19:46,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:46,351 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1107 transitions. [2020-11-28 03:19:46,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:46,352 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1107 transitions. [2020-11-28 03:19:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:19:46,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:46,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:46,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 03:19:46,355 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:46,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:46,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1731754847, now seen corresponding path program 1 times [2020-11-28 03:19:46,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:46,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818914941] [2020-11-28 03:19:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:46,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818914941] [2020-11-28 03:19:46,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:46,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:46,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550883084] [2020-11-28 03:19:46,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:46,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:46,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:46,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:46,387 INFO L87 Difference]: Start difference. First operand 901 states and 1107 transitions. Second operand 3 states. [2020-11-28 03:19:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:46,434 INFO L93 Difference]: Finished difference Result 1989 states and 2387 transitions. [2020-11-28 03:19:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:46,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-28 03:19:46,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:46,435 INFO L225 Difference]: With dead ends: 1989 [2020-11-28 03:19:46,435 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:19:46,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:19:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:19:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:19:46,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:19:46,438 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 03:19:46,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:46,439 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:19:46,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:46,439 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:19:46,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:19:46,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 03:19:46,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:19:46,461 INFO L274 CegarLoopResult]: For program point L60-1(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,461 INFO L274 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-11-28 03:19:46,461 INFO L274 CegarLoopResult]: For program point L52-1(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,461 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:19:46,461 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:19:46,462 INFO L274 CegarLoopResult]: For program point L94-1(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,462 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:19:46,462 INFO L274 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-11-28 03:19:46,462 INFO L274 CegarLoopResult]: For program point L79-1(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,462 INFO L274 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-11-28 03:19:46,462 INFO L277 CegarLoopResult]: At program point L105(lines 7 109) the Hoare annotation is: true [2020-11-28 03:19:46,462 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-11-28 03:19:46,463 INFO L274 CegarLoopResult]: For program point L64-1(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,463 INFO L274 CegarLoopResult]: For program point L89-1(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,463 INFO L274 CegarLoopResult]: For program point L56-1(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,463 INFO L274 CegarLoopResult]: For program point L48(lines 48 50) no Hoare annotation was computed. [2020-11-28 03:19:46,463 INFO L274 CegarLoopResult]: For program point L48-2(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,463 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:19:46,463 INFO L274 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-11-28 03:19:46,463 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:19:46,464 INFO L274 CegarLoopResult]: For program point L74-1(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,464 INFO L277 CegarLoopResult]: At program point L99-1(lines 29 104) the Hoare annotation is: true [2020-11-28 03:19:46,464 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:19:46,464 INFO L277 CegarLoopResult]: At program point L108(lines 6 109) the Hoare annotation is: true [2020-11-28 03:19:46,464 INFO L274 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-11-28 03:19:46,465 INFO L274 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-11-28 03:19:46,465 INFO L270 CegarLoopResult]: At program point L100-1(lines 7 109) the Hoare annotation is: false [2020-11-28 03:19:46,465 INFO L274 CegarLoopResult]: For program point L84-1(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,466 INFO L274 CegarLoopResult]: For program point L68-1(lines 29 104) no Hoare annotation was computed. [2020-11-28 03:19:46,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:19:46 BoogieIcfgContainer [2020-11-28 03:19:46,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:19:46,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:19:46,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:19:46,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:19:46,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:43" (3/4) ... [2020-11-28 03:19:46,489 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:19:46,509 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:19:46,509 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:19:46,510 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:19:46,510 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:19:46,600 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c2fc5a7c-3e44-453e-9e16-3c5658846d3e/bin/uautomizer/witness.graphml [2020-11-28 03:19:46,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:19:46,603 INFO L168 Benchmark]: Toolchain (without parser) took 3971.31 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.9 MB in the beginning and 34.1 MB in the end (delta: 20.8 MB). Peak memory consumption was 44.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:46,604 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 71.1 MB in the beginning and 71.0 MB in the end (delta: 60.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:46,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.69 ms. Allocated memory is still 90.2 MB. Free memory was 54.7 MB in the beginning and 67.9 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:46,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.32 ms. Allocated memory is still 90.2 MB. Free memory was 67.7 MB in the beginning and 66.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:46,606 INFO L168 Benchmark]: Boogie Preprocessor took 36.26 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 65.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:46,606 INFO L168 Benchmark]: RCFGBuilder took 511.34 ms. Allocated memory is still 90.2 MB. Free memory was 65.1 MB in the beginning and 49.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:46,607 INFO L168 Benchmark]: TraceAbstraction took 2764.80 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 48.9 MB in the beginning and 37.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:46,616 INFO L168 Benchmark]: Witness Printer took 117.82 ms. Allocated memory is still 115.3 MB. Free memory was 37.3 MB in the beginning and 34.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:46,619 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 90.2 MB. Free memory was 71.1 MB in the beginning and 71.0 MB in the end (delta: 60.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 459.69 ms. Allocated memory is still 90.2 MB. Free memory was 54.7 MB in the beginning and 67.9 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.32 ms. Allocated memory is still 90.2 MB. Free memory was 67.7 MB in the beginning and 66.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.26 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 65.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 511.34 ms. Allocated memory is still 90.2 MB. Free memory was 65.1 MB in the beginning and 49.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2764.80 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 48.9 MB in the beginning and 37.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. * Witness Printer took 117.82 ms. Allocated memory is still 115.3 MB. Free memory was 37.3 MB in the beginning and 34.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 828 SDtfs, 391 SDslu, 527 SDs, 0 SdLazy, 85 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 268 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 73 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 6810 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...