./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/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 2af97cd1d0200c0dff6df008e1ae10eecdfc76e4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:55,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:55,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:56,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:56,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:56,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:56,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:56,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:56,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:56,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:56,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:56,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:56,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:56,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:56,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:56,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:56,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:56,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:56,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:56,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:56,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:56,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:56,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:56,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:56,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:56,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:56,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:56,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:56,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:56,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:56,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:56,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:56,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:56,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:56,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:56,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:56,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:56,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:56,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:56,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:56,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:56,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:56,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:56,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:56,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:56,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:56,148 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:56,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:56,148 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:56,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:56,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:56,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:56,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:56,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:56,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:56,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:56,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:56,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:56,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:56,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:56,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:56,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:56,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:56,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:56,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:56,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:56,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:56,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:56,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:56,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:56,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:56,153 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_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2af97cd1d0200c0dff6df008e1ae10eecdfc76e4 [2020-11-28 02:57:56,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:56,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:56,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:56,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:56,434 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:56,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2020-11-28 02:57:56,522 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/data/9b7a81b40/aebbdf2dfc324b589de3acd9ec88f7ed/FLAGc2e8a0977 [2020-11-28 02:57:57,017 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:57,018 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2020-11-28 02:57:57,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/data/9b7a81b40/aebbdf2dfc324b589de3acd9ec88f7ed/FLAGc2e8a0977 [2020-11-28 02:57:57,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/data/9b7a81b40/aebbdf2dfc324b589de3acd9ec88f7ed [2020-11-28 02:57:57,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:57,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:57,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:57,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:57,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:57,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecbab26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57, skipping insertion in model container [2020-11-28 02:57:57,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:57,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:57,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:57,968 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:58,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:58,107 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:58,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58 WrapperNode [2020-11-28 02:57:58,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:58,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:58,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:58,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:58,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:58,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:58,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:58,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:58,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:58,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:58,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:58,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:58,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/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 02:57:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-28 02:57:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:58,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:58,839 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:58,840 INFO L298 CfgBuilder]: Removed 46 assume(true) statements. [2020-11-28 02:57:58,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:58 BoogieIcfgContainer [2020-11-28 02:57:58,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:58,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:58,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:58,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:58,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:57" (1/3) ... [2020-11-28 02:57:58,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d77fe53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:58, skipping insertion in model container [2020-11-28 02:57:58,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58" (2/3) ... [2020-11-28 02:57:58,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d77fe53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:58, skipping insertion in model container [2020-11-28 02:57:58,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:58" (3/3) ... [2020-11-28 02:57:58,851 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-11-28 02:57:58,869 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:58,874 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 02:57:58,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 02:57:58,921 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:58,921 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:58,921 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:58,921 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:58,921 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:58,922 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:58,922 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:58,922 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:58,937 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-28 02:57:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 02:57:58,942 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:58,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 02:57:58,943 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:58,950 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-11-28 02:57:58,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:58,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183701824] [2020-11-28 02:57:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:59,185 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 02:57:59,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183701824] [2020-11-28 02:57:59,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:59,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:59,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271593501] [2020-11-28 02:57:59,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:59,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:59,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:59,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:59,213 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-11-28 02:57:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:59,259 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2020-11-28 02:57:59,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:59,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 02:57:59,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:59,271 INFO L225 Difference]: With dead ends: 91 [2020-11-28 02:57:59,271 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 02:57:59,281 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 02:57:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 02:57:59,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 02:57:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:57:59,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-11-28 02:57:59,322 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 4 [2020-11-28 02:57:59,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:59,322 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-11-28 02:57:59,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-11-28 02:57:59,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:57:59,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:59,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:59,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:59,326 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:59,329 INFO L82 PathProgramCache]: Analyzing trace with hash -19018950, now seen corresponding path program 1 times [2020-11-28 02:57:59,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:59,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848200926] [2020-11-28 02:57:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:59,453 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 02:57:59,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848200926] [2020-11-28 02:57:59,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:59,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:57:59,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224196842] [2020-11-28 02:57:59,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:59,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:59,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:59,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:59,457 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-11-28 02:57:59,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:59,737 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-11-28 02:57:59,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:59,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 02:57:59,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:59,739 INFO L225 Difference]: With dead ends: 64 [2020-11-28 02:57:59,739 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 02:57:59,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 02:57:59,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-11-28 02:57:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:57:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-28 02:57:59,747 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 15 [2020-11-28 02:57:59,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:59,747 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-28 02:57:59,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-28 02:57:59,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:57:59,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:59,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:59,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:59,749 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:59,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:59,750 INFO L82 PathProgramCache]: Analyzing trace with hash 38239352, now seen corresponding path program 1 times [2020-11-28 02:57:59,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:59,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772867495] [2020-11-28 02:57:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:59,852 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 02:57:59,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772867495] [2020-11-28 02:57:59,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:59,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:57:59,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173418467] [2020-11-28 02:57:59,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:59,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:59,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:59,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:59,855 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-11-28 02:57:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:59,920 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-11-28 02:57:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:59,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 02:57:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:59,921 INFO L225 Difference]: With dead ends: 67 [2020-11-28 02:57:59,921 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 02:57:59,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 02:57:59,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 02:57:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:57:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-11-28 02:57:59,927 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 15 [2020-11-28 02:57:59,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:59,928 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-28 02:57:59,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:59,928 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-11-28 02:57:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:57:59,929 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:59,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:59,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:57:59,929 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:59,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:59,930 INFO L82 PathProgramCache]: Analyzing trace with hash 739303930, now seen corresponding path program 1 times [2020-11-28 02:57:59,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:59,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827218854] [2020-11-28 02:57:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:00,142 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 02:58:00,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827218854] [2020-11-28 02:58:00,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:00,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 02:58:00,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796829458] [2020-11-28 02:58:00,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:58:00,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:00,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:58:00,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:00,145 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 9 states. [2020-11-28 02:58:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:00,460 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-11-28 02:58:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:58:00,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-11-28 02:58:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:00,465 INFO L225 Difference]: With dead ends: 54 [2020-11-28 02:58:00,465 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 02:58:00,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:58:00,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 02:58:00,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-11-28 02:58:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 02:58:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-11-28 02:58:00,474 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 15 [2020-11-28 02:58:00,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:00,474 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-28 02:58:00,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:58:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-11-28 02:58:00,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:00,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:00,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:00,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:58:00,475 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:00,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:00,476 INFO L82 PathProgramCache]: Analyzing trace with hash 293914920, now seen corresponding path program 1 times [2020-11-28 02:58:00,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:00,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282179867] [2020-11-28 02:58:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:00,687 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 02:58:00,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282179867] [2020-11-28 02:58:00,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:00,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-28 02:58:00,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243301860] [2020-11-28 02:58:00,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 02:58:00,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:00,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 02:58:00,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:00,690 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 12 states. [2020-11-28 02:58:01,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:01,128 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-11-28 02:58:01,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 02:58:01,129 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-11-28 02:58:01,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:01,129 INFO L225 Difference]: With dead ends: 54 [2020-11-28 02:58:01,130 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 02:58:01,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-11-28 02:58:01,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 02:58:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-11-28 02:58:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 02:58:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-11-28 02:58:01,136 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 19 [2020-11-28 02:58:01,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:01,136 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-11-28 02:58:01,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 02:58:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-11-28 02:58:01,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:58:01,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:01,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:01,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:58:01,138 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:01,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:01,139 INFO L82 PathProgramCache]: Analyzing trace with hash 293974502, now seen corresponding path program 1 times [2020-11-28 02:58:01,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:01,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200955107] [2020-11-28 02:58:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:01,253 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 02:58:01,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200955107] [2020-11-28 02:58:01,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:01,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:01,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910872797] [2020-11-28 02:58:01,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:01,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:01,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:01,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:01,256 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2020-11-28 02:58:01,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:01,437 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-11-28 02:58:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:01,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-28 02:58:01,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:01,438 INFO L225 Difference]: With dead ends: 62 [2020-11-28 02:58:01,439 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 02:58:01,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 02:58:01,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2020-11-28 02:58:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 02:58:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-11-28 02:58:01,444 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 19 [2020-11-28 02:58:01,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:01,444 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-11-28 02:58:01,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-11-28 02:58:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:58:01,445 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:01,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:01,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:58:01,446 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:01,463 INFO L82 PathProgramCache]: Analyzing trace with hash -356272966, now seen corresponding path program 1 times [2020-11-28 02:58:01,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:01,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827819834] [2020-11-28 02:58:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:01,724 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 02:58:01,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827819834] [2020-11-28 02:58:01,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:01,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-28 02:58:01,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541450227] [2020-11-28 02:58:01,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 02:58:01,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:01,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 02:58:01,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:58:01,726 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 13 states. [2020-11-28 02:58:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:02,026 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-11-28 02:58:02,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:58:02,026 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-11-28 02:58:02,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:02,027 INFO L225 Difference]: With dead ends: 50 [2020-11-28 02:58:02,027 INFO L226 Difference]: Without dead ends: 48 [2020-11-28 02:58:02,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-11-28 02:58:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-28 02:58:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-11-28 02:58:02,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 02:58:02,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-11-28 02:58:02,033 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 25 [2020-11-28 02:58:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:02,033 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-11-28 02:58:02,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 02:58:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-11-28 02:58:02,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:58:02,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:02,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:02,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:58:02,035 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:02,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:02,035 INFO L82 PathProgramCache]: Analyzing trace with hash -356213384, now seen corresponding path program 1 times [2020-11-28 02:58:02,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:02,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029853109] [2020-11-28 02:58:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:02,206 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 02:58:02,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029853109] [2020-11-28 02:58:02,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:02,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-28 02:58:02,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65606565] [2020-11-28 02:58:02,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 02:58:02,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:02,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 02:58:02,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:02,209 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 12 states. [2020-11-28 02:58:02,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:02,540 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-11-28 02:58:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 02:58:02,541 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-11-28 02:58:02,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:02,542 INFO L225 Difference]: With dead ends: 48 [2020-11-28 02:58:02,542 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 02:58:02,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-11-28 02:58:02,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 02:58:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-28 02:58:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 02:58:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-28 02:58:02,547 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 25 [2020-11-28 02:58:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:02,548 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-28 02:58:02,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 02:58:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-28 02:58:02,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:58:02,549 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:02,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:02,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:58:02,549 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:02,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:02,550 INFO L82 PathProgramCache]: Analyzing trace with hash -298955082, now seen corresponding path program 1 times [2020-11-28 02:58:02,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:02,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478291659] [2020-11-28 02:58:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:02,855 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 02:58:02,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478291659] [2020-11-28 02:58:02,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:02,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 02:58:02,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148338125] [2020-11-28 02:58:02,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:58:02,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:02,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:58:02,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:02,857 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 9 states. [2020-11-28 02:58:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:03,224 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-11-28 02:58:03,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:58:03,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-28 02:58:03,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:03,225 INFO L225 Difference]: With dead ends: 48 [2020-11-28 02:58:03,225 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 02:58:03,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-11-28 02:58:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 02:58:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2020-11-28 02:58:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:58:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-28 02:58:03,230 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 25 [2020-11-28 02:58:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:03,231 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-28 02:58:03,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:58:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-28 02:58:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 02:58:03,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:03,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:03,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:58:03,232 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:03,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1054394266, now seen corresponding path program 1 times [2020-11-28 02:58:03,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:03,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427416826] [2020-11-28 02:58:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,341 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 02:58:03,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427416826] [2020-11-28 02:58:03,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:03,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:03,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817748506] [2020-11-28 02:58:03,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:03,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:03,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:03,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:03,343 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 5 states. [2020-11-28 02:58:03,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:03,423 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-11-28 02:58:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:03,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-28 02:58:03,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:03,426 INFO L225 Difference]: With dead ends: 44 [2020-11-28 02:58:03,426 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 02:58:03,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:03,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 02:58:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-11-28 02:58:03,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 02:58:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-28 02:58:03,429 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 29 [2020-11-28 02:58:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:03,430 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-28 02:58:03,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-28 02:58:03,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 02:58:03,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:03,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:03,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:58:03,431 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:03,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1863740892, now seen corresponding path program 1 times [2020-11-28 02:58:03,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:03,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030306705] [2020-11-28 02:58:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:03,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:03,505 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:03,547 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:03,547 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:58:03,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 02:58:03,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:03 BoogieIcfgContainer [2020-11-28 02:58:03,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:03,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:03,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:03,630 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:03,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:58" (3/4) ... [2020-11-28 02:58:03,634 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:58:03,703 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dadc3c9c-dfd5-491d-b7d4-0399640c34b3/bin/uautomizer/witness.graphml [2020-11-28 02:58:03,703 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:03,708 INFO L168 Benchmark]: Toolchain (without parser) took 6211.10 ms. Allocated memory was 94.4 MB in the beginning and 155.2 MB in the end (delta: 60.8 MB). Free memory was 59.1 MB in the beginning and 55.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 63.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:03,709 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 67.9 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:03,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.33 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 58.4 MB in the end (delta: 595.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:03,709 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.82 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 56.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:03,710 INFO L168 Benchmark]: Boogie Preprocessor took 41.13 ms. Allocated memory is still 94.4 MB. Free memory was 56.3 MB in the beginning and 55.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:03,710 INFO L168 Benchmark]: RCFGBuilder took 613.18 ms. Allocated memory is still 94.4 MB. Free memory was 55.0 MB in the beginning and 31.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:03,711 INFO L168 Benchmark]: TraceAbstraction took 4785.85 ms. Allocated memory was 94.4 MB in the beginning and 155.2 MB in the end (delta: 60.8 MB). Free memory was 31.1 MB in the beginning and 59.6 MB in the end (delta: -28.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:03,711 INFO L168 Benchmark]: Witness Printer took 73.48 ms. Allocated memory is still 155.2 MB. Free memory was 59.6 MB in the beginning and 55.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:03,713 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 67.9 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 613.33 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 58.4 MB in the end (delta: 595.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.82 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 56.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.13 ms. Allocated memory is still 94.4 MB. Free memory was 56.3 MB in the beginning and 55.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 613.18 ms. Allocated memory is still 94.4 MB. Free memory was 55.0 MB in the beginning and 31.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4785.85 ms. Allocated memory was 94.4 MB in the beginning and 155.2 MB in the end (delta: 60.8 MB). Free memory was 31.1 MB in the beginning and 59.6 MB in the end (delta: -28.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * Witness Printer took 73.48 ms. Allocated memory is still 155.2 MB. Free memory was 59.6 MB in the beginning and 55.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L519] void * guard_malloc_counter = 0; [L534] struct list_head *elem = ((void *)0); [L544] static struct list_head head; VAL [elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L546] struct list_head *dev1, *dev2; [L522] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; VAL [elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L529] return __getMemory(size); [L547] dev1 = my_malloc(sizeof(*dev1)) [L522] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; VAL [elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L529] return __getMemory(size); [L548] dev2 = my_malloc(sizeof(*dev2)) [L549] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new VAL [elem={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new VAL [elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L541] COND FALSE !(entry==elem) VAL [elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L3] __assert_fail("0", "rule60_list2.c_1.i", 3, "reach_error") VAL [elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 306 SDtfs, 892 SDslu, 605 SDs, 0 SdLazy, 725 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 44 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 19663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...