./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 462c34e9f51057faedad8f148a3437a4550c80b7 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:00:52,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:00:52,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:00:53,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:00:53,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:00:53,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:00:53,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:00:53,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:00:53,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:00:53,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:00:53,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:00:53,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:00:53,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:00:53,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:00:53,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:00:53,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:00:53,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:00:53,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:00:53,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:00:53,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:00:53,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:00:53,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:00:53,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:00:53,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:00:53,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:00:53,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:00:53,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:00:53,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:00:53,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:00:53,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:00:53,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:00:53,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:00:53,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:00:53,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:00:53,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:00:53,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:00:53,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:00:53,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:00:53,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:00:53,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:00:53,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:00:53,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2020-11-22 13:00:53,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:00:53,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:00:53,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:00:53,140 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:00:53,140 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:00:53,140 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:00:53,141 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:00:53,141 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:00:53,141 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:00:53,141 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:00:53,142 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:00:53,143 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:00:53,143 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:00:53,143 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:00:53,143 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:00:53,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:00:53,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:00:53,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:00:53,145 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:00:53,145 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:00:53,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:00:53,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:00:53,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:00:53,146 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:00:53,146 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:00:53,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:00:53,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:00:53,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:00:53,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:00:53,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:00:53,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:00:53,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:00:53,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:00:53,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:00:53,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:00:53,150 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:00:53,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:00:53,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:00:53,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:00:53,151 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 462c34e9f51057faedad8f148a3437a4550c80b7 [2020-11-22 13:00:53,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:00:53,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:00:53,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:00:53,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:00:53,483 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:00:53,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2020-11-22 13:00:53,579 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/data/4c954b3f8/bffd3c8319fb460daaba7fe639beec2d/FLAGac39c9389 [2020-11-22 13:00:54,094 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:00:54,095 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2020-11-22 13:00:54,115 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/data/4c954b3f8/bffd3c8319fb460daaba7fe639beec2d/FLAGac39c9389 [2020-11-22 13:00:54,578 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/data/4c954b3f8/bffd3c8319fb460daaba7fe639beec2d [2020-11-22 13:00:54,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:00:54,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:00:54,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:54,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:00:54,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:00:54,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:54" (1/1) ... [2020-11-22 13:00:54,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42472da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:54, skipping insertion in model container [2020-11-22 13:00:54,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:54" (1/1) ... [2020-11-22 13:00:54,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:00:54,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:00:54,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:54,958 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:00:54,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:55,059 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:00:55,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55 WrapperNode [2020-11-22 13:00:55,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:55,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:55,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:00:55,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:00:55,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (1/1) ... [2020-11-22 13:00:55,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (1/1) ... [2020-11-22 13:00:55,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:55,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:00:55,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:00:55,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:00:55,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (1/1) ... [2020-11-22 13:00:55,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (1/1) ... [2020-11-22 13:00:55,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (1/1) ... [2020-11-22 13:00:55,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (1/1) ... [2020-11-22 13:00:55,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (1/1) ... [2020-11-22 13:00:55,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (1/1) ... [2020-11-22 13:00:55,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (1/1) ... [2020-11-22 13:00:55,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:00:55,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:00:55,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:00:55,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:00:55,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/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 [2020-11-22 13:00:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:00:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:00:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:00:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 13:00:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:00:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 13:00:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:00:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:00:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:00:55,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:00:56,087 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:00:56,088 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 13:00:56,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:56 BoogieIcfgContainer [2020-11-22 13:00:56,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:00:56,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:00:56,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:00:56,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:00:56,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:00:54" (1/3) ... [2020-11-22 13:00:56,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b70974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:56, skipping insertion in model container [2020-11-22 13:00:56,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:55" (2/3) ... [2020-11-22 13:00:56,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b70974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:56, skipping insertion in model container [2020-11-22 13:00:56,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:56" (3/3) ... [2020-11-22 13:00:56,098 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-1.i [2020-11-22 13:00:56,108 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:00:56,113 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 61 error locations. [2020-11-22 13:00:56,124 INFO L253 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2020-11-22 13:00:56,143 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:00:56,144 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:00:56,144 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:00:56,144 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:00:56,144 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:00:56,144 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:00:56,144 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:00:56,144 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:00:56,160 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-11-22 13:00:56,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-22 13:00:56,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:56,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-22 13:00:56,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:00:56,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:56,172 INFO L82 PathProgramCache]: Analyzing trace with hash 7940, now seen corresponding path program 1 times [2020-11-22 13:00:56,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:56,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23677855] [2020-11-22 13:00:56,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:56,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23677855] [2020-11-22 13:00:56,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:56,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:00:56,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613814805] [2020-11-22 13:00:56,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:56,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:56,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:56,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:56,371 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 3 states. [2020-11-22 13:00:56,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:56,589 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2020-11-22 13:00:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:56,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-22 13:00:56,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:56,602 INFO L225 Difference]: With dead ends: 111 [2020-11-22 13:00:56,603 INFO L226 Difference]: Without dead ends: 109 [2020-11-22 13:00:56,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-22 13:00:56,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-11-22 13:00:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-22 13:00:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2020-11-22 13:00:56,657 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 2 [2020-11-22 13:00:56,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:56,657 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2020-11-22 13:00:56,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2020-11-22 13:00:56,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-22 13:00:56,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:56,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-22 13:00:56,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:00:56,659 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:00:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:56,660 INFO L82 PathProgramCache]: Analyzing trace with hash 7941, now seen corresponding path program 1 times [2020-11-22 13:00:56,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:56,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099931393] [2020-11-22 13:00:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:56,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099931393] [2020-11-22 13:00:56,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:56,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:00:56,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484251693] [2020-11-22 13:00:56,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:56,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:56,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:56,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:56,739 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand 3 states. [2020-11-22 13:00:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:56,927 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2020-11-22 13:00:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:56,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-22 13:00:56,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:56,930 INFO L225 Difference]: With dead ends: 129 [2020-11-22 13:00:56,930 INFO L226 Difference]: Without dead ends: 129 [2020-11-22 13:00:56,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:56,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-22 13:00:56,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 103. [2020-11-22 13:00:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-22 13:00:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2020-11-22 13:00:56,957 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 2 [2020-11-22 13:00:56,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:56,957 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2020-11-22 13:00:56,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2020-11-22 13:00:56,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:00:56,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:56,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:56,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:00:56,959 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:00:56,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:56,959 INFO L82 PathProgramCache]: Analyzing trace with hash -334235337, now seen corresponding path program 1 times [2020-11-22 13:00:56,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:56,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99842177] [2020-11-22 13:00:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:57,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99842177] [2020-11-22 13:00:57,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:57,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:57,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758823346] [2020-11-22 13:00:57,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:00:57,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:57,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:00:57,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:57,065 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 4 states. [2020-11-22 13:00:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:57,301 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2020-11-22 13:00:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:00:57,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 13:00:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:57,303 INFO L225 Difference]: With dead ends: 101 [2020-11-22 13:00:57,303 INFO L226 Difference]: Without dead ends: 101 [2020-11-22 13:00:57,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:00:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-22 13:00:57,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2020-11-22 13:00:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-22 13:00:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2020-11-22 13:00:57,323 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 7 [2020-11-22 13:00:57,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:57,324 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2020-11-22 13:00:57,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:00:57,324 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2020-11-22 13:00:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:00:57,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:57,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:57,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:00:57,326 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:00:57,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:57,327 INFO L82 PathProgramCache]: Analyzing trace with hash -334235336, now seen corresponding path program 1 times [2020-11-22 13:00:57,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:57,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89644216] [2020-11-22 13:00:57,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:57,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89644216] [2020-11-22 13:00:57,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:57,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:00:57,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394917917] [2020-11-22 13:00:57,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:00:57,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:57,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:00:57,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:57,422 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand 4 states. [2020-11-22 13:00:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:57,720 INFO L93 Difference]: Finished difference Result 135 states and 154 transitions. [2020-11-22 13:00:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:00:57,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 13:00:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:57,722 INFO L225 Difference]: With dead ends: 135 [2020-11-22 13:00:57,722 INFO L226 Difference]: Without dead ends: 135 [2020-11-22 13:00:57,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:00:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-22 13:00:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 118. [2020-11-22 13:00:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-22 13:00:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2020-11-22 13:00:57,732 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 7 [2020-11-22 13:00:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:57,732 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2020-11-22 13:00:57,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:00:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2020-11-22 13:00:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:00:57,737 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:57,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:57,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:00:57,737 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:00:57,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash 922388218, now seen corresponding path program 1 times [2020-11-22 13:00:57,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:57,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893580172] [2020-11-22 13:00:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:57,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893580172] [2020-11-22 13:00:57,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:57,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:00:57,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895938958] [2020-11-22 13:00:57,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:00:57,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:57,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:00:57,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:00:57,805 INFO L87 Difference]: Start difference. First operand 118 states and 147 transitions. Second operand 5 states. [2020-11-22 13:00:58,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:58,122 INFO L93 Difference]: Finished difference Result 202 states and 251 transitions. [2020-11-22 13:00:58,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:00:58,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-22 13:00:58,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:58,124 INFO L225 Difference]: With dead ends: 202 [2020-11-22 13:00:58,124 INFO L226 Difference]: Without dead ends: 202 [2020-11-22 13:00:58,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:00:58,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-22 13:00:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 117. [2020-11-22 13:00:58,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-22 13:00:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2020-11-22 13:00:58,134 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 9 [2020-11-22 13:00:58,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:58,134 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2020-11-22 13:00:58,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:00:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2020-11-22 13:00:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:00:58,135 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:58,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:58,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:00:58,135 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:00:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:58,136 INFO L82 PathProgramCache]: Analyzing trace with hash 922388219, now seen corresponding path program 1 times [2020-11-22 13:00:58,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:58,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591067648] [2020-11-22 13:00:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:58,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591067648] [2020-11-22 13:00:58,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:58,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:00:58,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545341306] [2020-11-22 13:00:58,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:00:58,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:58,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:00:58,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:00:58,237 INFO L87 Difference]: Start difference. First operand 117 states and 145 transitions. Second operand 5 states. [2020-11-22 13:00:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:58,593 INFO L93 Difference]: Finished difference Result 208 states and 260 transitions. [2020-11-22 13:00:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:00:58,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-22 13:00:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:58,595 INFO L225 Difference]: With dead ends: 208 [2020-11-22 13:00:58,595 INFO L226 Difference]: Without dead ends: 208 [2020-11-22 13:00:58,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:00:58,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-22 13:00:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 116. [2020-11-22 13:00:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-22 13:00:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2020-11-22 13:00:58,604 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 9 [2020-11-22 13:00:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:58,604 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2020-11-22 13:00:58,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:00:58,605 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2020-11-22 13:00:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:00:58,605 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:58,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:58,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:00:58,606 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:00:58,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:58,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1652010883, now seen corresponding path program 1 times [2020-11-22 13:00:58,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:58,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160790728] [2020-11-22 13:00:58,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:58,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160790728] [2020-11-22 13:00:58,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:58,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 13:00:58,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98091602] [2020-11-22 13:00:58,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:00:58,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:58,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:00:58,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:00:58,716 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand 8 states. [2020-11-22 13:00:59,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:59,140 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2020-11-22 13:00:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 13:00:59,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-22 13:00:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:59,142 INFO L225 Difference]: With dead ends: 121 [2020-11-22 13:00:59,142 INFO L226 Difference]: Without dead ends: 121 [2020-11-22 13:00:59,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:00:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-22 13:00:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2020-11-22 13:00:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-22 13:00:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2020-11-22 13:00:59,148 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 11 [2020-11-22 13:00:59,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:59,149 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2020-11-22 13:00:59,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:00:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2020-11-22 13:00:59,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:00:59,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:59,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:59,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:00:59,157 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:00:59,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:59,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1652010884, now seen corresponding path program 1 times [2020-11-22 13:00:59,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:59,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292613091] [2020-11-22 13:00:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:59,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292613091] [2020-11-22 13:00:59,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:59,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-22 13:00:59,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229697811] [2020-11-22 13:00:59,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 13:00:59,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:59,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 13:00:59,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:00:59,310 INFO L87 Difference]: Start difference. First operand 115 states and 142 transitions. Second operand 9 states. [2020-11-22 13:00:59,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:59,838 INFO L93 Difference]: Finished difference Result 118 states and 141 transitions. [2020-11-22 13:00:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 13:00:59,839 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-11-22 13:00:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:59,840 INFO L225 Difference]: With dead ends: 118 [2020-11-22 13:00:59,840 INFO L226 Difference]: Without dead ends: 118 [2020-11-22 13:00:59,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-11-22 13:00:59,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-22 13:00:59,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 104. [2020-11-22 13:00:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-22 13:00:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 130 transitions. [2020-11-22 13:00:59,850 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 130 transitions. Word has length 11 [2020-11-22 13:00:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:59,850 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 130 transitions. [2020-11-22 13:00:59,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 13:00:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 130 transitions. [2020-11-22 13:00:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:00:59,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:59,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:59,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:00:59,851 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:00:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:59,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1318310174, now seen corresponding path program 1 times [2020-11-22 13:00:59,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:59,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666396895] [2020-11-22 13:00:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:59,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666396895] [2020-11-22 13:00:59,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:59,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:59,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730453934] [2020-11-22 13:00:59,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:00:59,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:59,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:00:59,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:59,950 INFO L87 Difference]: Start difference. First operand 104 states and 130 transitions. Second operand 4 states. [2020-11-22 13:01:00,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:00,158 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2020-11-22 13:01:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:01:00,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-22 13:01:00,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:00,160 INFO L225 Difference]: With dead ends: 121 [2020-11-22 13:01:00,160 INFO L226 Difference]: Without dead ends: 121 [2020-11-22 13:01:00,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:01:00,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-22 13:01:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 92. [2020-11-22 13:01:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-22 13:01:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2020-11-22 13:01:00,164 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 13 [2020-11-22 13:01:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:00,165 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2020-11-22 13:01:00,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:01:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2020-11-22 13:01:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:01:00,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:00,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:00,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 13:01:00,174 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:00,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash -959525130, now seen corresponding path program 1 times [2020-11-22 13:01:00,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:00,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444191142] [2020-11-22 13:01:00,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:00,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444191142] [2020-11-22 13:01:00,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:00,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 13:01:00,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450675788] [2020-11-22 13:01:00,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:01:00,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:00,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:01:00,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:01:00,265 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand 5 states. [2020-11-22 13:01:00,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:00,445 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2020-11-22 13:01:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:01:00,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-22 13:01:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:00,446 INFO L225 Difference]: With dead ends: 102 [2020-11-22 13:01:00,446 INFO L226 Difference]: Without dead ends: 102 [2020-11-22 13:01:00,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:01:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-22 13:01:00,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2020-11-22 13:01:00,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-22 13:01:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-11-22 13:01:00,449 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 13 [2020-11-22 13:01:00,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:00,449 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-11-22 13:01:00,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:01:00,449 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-11-22 13:01:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:01:00,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:00,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:00,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 13:01:00,450 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:00,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:00,450 INFO L82 PathProgramCache]: Analyzing trace with hash 321805608, now seen corresponding path program 1 times [2020-11-22 13:01:00,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:00,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269969708] [2020-11-22 13:01:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:00,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269969708] [2020-11-22 13:01:00,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:00,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:01:00,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330301588] [2020-11-22 13:01:00,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:01:00,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:00,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:01:00,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:01:00,534 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-11-22 13:01:00,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:00,765 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2020-11-22 13:01:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:01:00,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-22 13:01:00,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:00,766 INFO L225 Difference]: With dead ends: 129 [2020-11-22 13:01:00,766 INFO L226 Difference]: Without dead ends: 129 [2020-11-22 13:01:00,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:01:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-22 13:01:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 97. [2020-11-22 13:01:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-22 13:01:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-11-22 13:01:00,770 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 14 [2020-11-22 13:01:00,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:00,770 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-11-22 13:01:00,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:01:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-11-22 13:01:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:01:00,771 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:00,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:00,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 13:01:00,772 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:00,772 INFO L82 PathProgramCache]: Analyzing trace with hash 321805609, now seen corresponding path program 1 times [2020-11-22 13:01:00,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:00,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474873231] [2020-11-22 13:01:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:00,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474873231] [2020-11-22 13:01:00,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:00,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:01:00,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068394550] [2020-11-22 13:01:00,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:01:00,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:00,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:01:00,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:01:00,888 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 5 states. [2020-11-22 13:01:01,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:01,099 INFO L93 Difference]: Finished difference Result 135 states and 154 transitions. [2020-11-22 13:01:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:01:01,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-22 13:01:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:01,101 INFO L225 Difference]: With dead ends: 135 [2020-11-22 13:01:01,101 INFO L226 Difference]: Without dead ends: 135 [2020-11-22 13:01:01,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:01:01,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-22 13:01:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 94. [2020-11-22 13:01:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-22 13:01:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2020-11-22 13:01:01,104 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 14 [2020-11-22 13:01:01,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:01,105 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2020-11-22 13:01:01,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:01:01,105 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2020-11-22 13:01:01,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:01:01,106 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:01,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:01,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-22 13:01:01,106 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:01,107 INFO L82 PathProgramCache]: Analyzing trace with hash -597365508, now seen corresponding path program 1 times [2020-11-22 13:01:01,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:01,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73907724] [2020-11-22 13:01:01,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:01,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73907724] [2020-11-22 13:01:01,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667768335] [2020-11-22 13:01:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:01:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:01,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-22 13:01:01,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:01,423 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-22 13:01:01,423 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,434 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:01,435 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,435 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 13:01:01,487 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:01,487 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-22 13:01:01,488 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,521 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-11-22 13:01:01,521 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,521 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-11-22 13:01:01,572 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-22 13:01:01,572 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:01,583 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,584 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-11-22 13:01:01,620 INFO L350 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2020-11-22 13:01:01,620 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2020-11-22 13:01:01,621 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,628 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:01,628 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,629 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2020-11-22 13:01:01,782 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-11-22 13:01:01,782 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 12 [2020-11-22 13:01:01,790 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,800 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:01,801 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:01:01,802 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:11 [2020-11-22 13:01:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:01,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:01,895 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2020-11-22 13:01:01,902 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,910 INFO L625 ElimStorePlain]: treesize reduction 19, result has 20.8 percent of original size [2020-11-22 13:01:01,911 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,924 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:01,924 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:01,925 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2020-11-22 13:01:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:01,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2050508218] [2020-11-22 13:01:01,983 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2020-11-22 13:01:01,983 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:01:01,987 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:01:01,993 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:01:01,993 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:01:02,601 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:01:03,023 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:01:03,228 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-11-22 13:01:03,467 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-11-22 13:01:03,765 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2020-11-22 13:01:04,128 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2020-11-22 13:01:04,552 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2020-11-22 13:01:04,923 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2020-11-22 13:01:05,251 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 92 [2020-11-22 13:01:05,565 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2020-11-22 13:01:06,061 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 101 [2020-11-22 13:01:06,437 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 106 [2020-11-22 13:01:07,013 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 114 [2020-11-22 13:01:07,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:01:07,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 6, 6] total 23 [2020-11-22 13:01:07,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908566654] [2020-11-22 13:01:07,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-22 13:01:07,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:07,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-22 13:01:07,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-11-22 13:01:07,088 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand 13 states. [2020-11-22 13:01:07,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:07,642 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2020-11-22 13:01:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-22 13:01:07,642 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-11-22 13:01:07,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:07,643 INFO L225 Difference]: With dead ends: 102 [2020-11-22 13:01:07,644 INFO L226 Difference]: Without dead ends: 102 [2020-11-22 13:01:07,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-11-22 13:01:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-22 13:01:07,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-11-22 13:01:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-22 13:01:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-11-22 13:01:07,648 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 16 [2020-11-22 13:01:07,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:07,648 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-11-22 13:01:07,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-22 13:01:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-11-22 13:01:07,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:01:07,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:07,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:07,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-22 13:01:07,862 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:07,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1338526914, now seen corresponding path program 1 times [2020-11-22 13:01:07,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:07,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170769355] [2020-11-22 13:01:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:07,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170769355] [2020-11-22 13:01:07,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:07,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 13:01:07,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126777317] [2020-11-22 13:01:07,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:01:07,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:07,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:01:07,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:01:07,965 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 7 states. [2020-11-22 13:01:08,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:08,330 INFO L93 Difference]: Finished difference Result 138 states and 155 transitions. [2020-11-22 13:01:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:01:08,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-11-22 13:01:08,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:08,332 INFO L225 Difference]: With dead ends: 138 [2020-11-22 13:01:08,332 INFO L226 Difference]: Without dead ends: 138 [2020-11-22 13:01:08,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-11-22 13:01:08,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-22 13:01:08,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-11-22 13:01:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-22 13:01:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2020-11-22 13:01:08,336 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 17 [2020-11-22 13:01:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:08,336 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2020-11-22 13:01:08,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:01:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2020-11-22 13:01:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:01:08,337 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:08,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:08,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-22 13:01:08,338 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:08,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1338526913, now seen corresponding path program 1 times [2020-11-22 13:01:08,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:08,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340176808] [2020-11-22 13:01:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:08,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340176808] [2020-11-22 13:01:08,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:08,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 13:01:08,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753466019] [2020-11-22 13:01:08,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:01:08,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:08,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:01:08,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:01:08,495 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand 7 states. [2020-11-22 13:01:08,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:08,929 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2020-11-22 13:01:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 13:01:08,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-11-22 13:01:08,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:08,931 INFO L225 Difference]: With dead ends: 159 [2020-11-22 13:01:08,931 INFO L226 Difference]: Without dead ends: 159 [2020-11-22 13:01:08,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:01:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-22 13:01:08,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 125. [2020-11-22 13:01:08,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-22 13:01:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 156 transitions. [2020-11-22 13:01:08,935 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 156 transitions. Word has length 17 [2020-11-22 13:01:08,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:08,935 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 156 transitions. [2020-11-22 13:01:08,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:01:08,935 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 156 transitions. [2020-11-22 13:01:08,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:01:08,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:08,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:08,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-22 13:01:08,936 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:08,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:08,937 INFO L82 PathProgramCache]: Analyzing trace with hash 543932927, now seen corresponding path program 1 times [2020-11-22 13:01:08,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:08,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44038041] [2020-11-22 13:01:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:09,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44038041] [2020-11-22 13:01:09,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:09,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 13:01:09,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638288426] [2020-11-22 13:01:09,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:01:09,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:09,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:01:09,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:01:09,005 INFO L87 Difference]: Start difference. First operand 125 states and 156 transitions. Second operand 5 states. [2020-11-22 13:01:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:09,249 INFO L93 Difference]: Finished difference Result 177 states and 212 transitions. [2020-11-22 13:01:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:01:09,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-22 13:01:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:09,251 INFO L225 Difference]: With dead ends: 177 [2020-11-22 13:01:09,251 INFO L226 Difference]: Without dead ends: 177 [2020-11-22 13:01:09,251 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 [2020-11-22 13:01:09,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-22 13:01:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-11-22 13:01:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-22 13:01:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 168 transitions. [2020-11-22 13:01:09,258 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 168 transitions. Word has length 17 [2020-11-22 13:01:09,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:09,259 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 168 transitions. [2020-11-22 13:01:09,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:01:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 168 transitions. [2020-11-22 13:01:09,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:01:09,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:09,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:09,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-22 13:01:09,261 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:09,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:09,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1455423164, now seen corresponding path program 1 times [2020-11-22 13:01:09,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:09,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150054337] [2020-11-22 13:01:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:09,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150054337] [2020-11-22 13:01:09,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:09,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:01:09,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197774945] [2020-11-22 13:01:09,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:01:09,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:09,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:01:09,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:01:09,300 INFO L87 Difference]: Start difference. First operand 134 states and 168 transitions. Second operand 4 states. [2020-11-22 13:01:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:09,455 INFO L93 Difference]: Finished difference Result 145 states and 177 transitions. [2020-11-22 13:01:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:01:09,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-22 13:01:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:09,457 INFO L225 Difference]: With dead ends: 145 [2020-11-22 13:01:09,457 INFO L226 Difference]: Without dead ends: 145 [2020-11-22 13:01:09,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:01:09,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-22 13:01:09,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 134. [2020-11-22 13:01:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-22 13:01:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 166 transitions. [2020-11-22 13:01:09,461 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 166 transitions. Word has length 18 [2020-11-22 13:01:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:09,461 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 166 transitions. [2020-11-22 13:01:09,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:01:09,461 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 166 transitions. [2020-11-22 13:01:09,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-22 13:01:09,462 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:09,462 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] [2020-11-22 13:01:09,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-22 13:01:09,462 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:09,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1498728335, now seen corresponding path program 1 times [2020-11-22 13:01:09,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:09,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292399578] [2020-11-22 13:01:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:09,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292399578] [2020-11-22 13:01:09,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:09,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:01:09,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801895825] [2020-11-22 13:01:09,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:01:09,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:09,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:01:09,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:01:09,519 INFO L87 Difference]: Start difference. First operand 134 states and 166 transitions. Second operand 4 states. [2020-11-22 13:01:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:09,678 INFO L93 Difference]: Finished difference Result 140 states and 171 transitions. [2020-11-22 13:01:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:01:09,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-22 13:01:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:09,680 INFO L225 Difference]: With dead ends: 140 [2020-11-22 13:01:09,680 INFO L226 Difference]: Without dead ends: 140 [2020-11-22 13:01:09,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:01:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-22 13:01:09,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2020-11-22 13:01:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-22 13:01:09,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 167 transitions. [2020-11-22 13:01:09,693 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 167 transitions. Word has length 20 [2020-11-22 13:01:09,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:09,693 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 167 transitions. [2020-11-22 13:01:09,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:01:09,694 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 167 transitions. [2020-11-22 13:01:09,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 13:01:09,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:09,694 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:09,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-22 13:01:09,696 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:09,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:09,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1697063028, now seen corresponding path program 1 times [2020-11-22 13:01:09,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:09,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106248871] [2020-11-22 13:01:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:09,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106248871] [2020-11-22 13:01:09,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066080735] [2020-11-22 13:01:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:01:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:09,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-22 13:01:09,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:10,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:15,828 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-22 13:01:16,211 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 36 [2020-11-22 13:01:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:16,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:01:16,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [9] total 26 [2020-11-22 13:01:16,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441127988] [2020-11-22 13:01:16,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-22 13:01:16,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:16,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-22 13:01:16,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=575, Unknown=5, NotChecked=0, Total=650 [2020-11-22 13:01:16,261 INFO L87 Difference]: Start difference. First operand 136 states and 167 transitions. Second operand 19 states. [2020-11-22 13:01:17,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:17,834 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2020-11-22 13:01:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-22 13:01:17,835 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 21 [2020-11-22 13:01:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:17,835 INFO L225 Difference]: With dead ends: 161 [2020-11-22 13:01:17,835 INFO L226 Difference]: Without dead ends: 161 [2020-11-22 13:01:17,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=171, Invalid=1156, Unknown=5, NotChecked=0, Total=1332 [2020-11-22 13:01:17,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-22 13:01:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 140. [2020-11-22 13:01:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-22 13:01:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 172 transitions. [2020-11-22 13:01:17,839 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 172 transitions. Word has length 21 [2020-11-22 13:01:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:17,839 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 172 transitions. [2020-11-22 13:01:17,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-22 13:01:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 172 transitions. [2020-11-22 13:01:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 13:01:17,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:17,839 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] [2020-11-22 13:01:18,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-22 13:01:18,050 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr47REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr51REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr49REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr56REQUIRES_VIOLATION, ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr54REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr50REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr48REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr53REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr55REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION]=== [2020-11-22 13:01:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:18,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1697930268, now seen corresponding path program 1 times [2020-11-22 13:01:18,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:18,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319030325] [2020-11-22 13:01:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:01:18,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:01:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:01:18,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:01:18,100 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:01:18,100 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:01:18,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-22 13:01:18,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:01:18 BoogieIcfgContainer [2020-11-22 13:01:18,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:01:18,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:01:18,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:01:18,148 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:01:18,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:56" (3/4) ... [2020-11-22 13:01:18,151 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:01:18,207 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2082dd03-8cb7-408c-ba17-2a6205509ff3/bin/utaipan/witness.graphml [2020-11-22 13:01:18,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:01:18,208 INFO L168 Benchmark]: Toolchain (without parser) took 23624.96 ms. Allocated memory was 81.8 MB in the beginning and 264.2 MB in the end (delta: 182.5 MB). Free memory was 50.4 MB in the beginning and 186.4 MB in the end (delta: -136.0 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:18,208 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 38.0 MB in the beginning and 37.9 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:18,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.42 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 50.1 MB in the beginning and 64.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:18,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.42 ms. Allocated memory is still 98.6 MB. Free memory was 64.1 MB in the beginning and 62.1 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:18,209 INFO L168 Benchmark]: Boogie Preprocessor took 34.22 ms. Allocated memory is still 98.6 MB. Free memory was 62.1 MB in the beginning and 60.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:18,209 INFO L168 Benchmark]: RCFGBuilder took 948.24 ms. Allocated memory is still 98.6 MB. Free memory was 60.2 MB in the beginning and 59.4 MB in the end (delta: 835.9 kB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:18,210 INFO L168 Benchmark]: TraceAbstraction took 22055.80 ms. Allocated memory was 98.6 MB in the beginning and 264.2 MB in the end (delta: 165.7 MB). Free memory was 58.7 MB in the beginning and 188.5 MB in the end (delta: -129.8 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:18,211 INFO L168 Benchmark]: Witness Printer took 58.99 ms. Allocated memory is still 264.2 MB. Free memory was 188.5 MB in the beginning and 186.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:18,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 38.0 MB in the beginning and 37.9 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 473.42 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 50.1 MB in the beginning and 64.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.42 ms. Allocated memory is still 98.6 MB. Free memory was 64.1 MB in the beginning and 62.1 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.22 ms. Allocated memory is still 98.6 MB. Free memory was 62.1 MB in the beginning and 60.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 948.24 ms. Allocated memory is still 98.6 MB. Free memory was 60.2 MB in the beginning and 59.4 MB in the end (delta: 835.9 kB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22055.80 ms. Allocated memory was 98.6 MB in the beginning and 264.2 MB in the end (delta: 165.7 MB). Free memory was 58.7 MB in the beginning and 188.5 MB in the end (delta: -129.8 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. * Witness Printer took 58.99 ms. Allocated memory is still 264.2 MB. Free memory was 188.5 MB in the beginning and 186.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1000] SLL* head = malloc(sizeof(SLL)); [L1001] head->next = ((void*)0) [L1002] head->prev = ((void*)0) [L1003] head->data = 0 [L1005] SLL* x = head; [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1019] COND TRUE __VERIFIER_nondet_int() [L1020] x = malloc(sizeof(SLL)) [L1021] x->data = 1 [L1022] x->next = head [L1023] x->prev = ((void*)0) [L1024] head = x [L1050] x = head [L1053] EXPR x->data [L1053] COND FALSE !(x->data != 1) [L1059] EXPR x->next [L1059] x = x->next [L1060] COND TRUE \read(*x) [L1062] EXPR x->data [L1062] COND TRUE x->data != 1 [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-simple-white-blue-1.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 112 locations, 61 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.9s, OverallIterations: 20, TraceHistogramMax: 2, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1132 SDtfs, 1956 SDslu, 1547 SDs, 0 SdLazy, 3889 SolverSat, 487 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 240 GetRequests, 68 SyntacticMatches, 22 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 504 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 289 ConstructedInterpolants, 9 QuantifiedInterpolants, 46113 SizeOfPredicates, 30 NumberOfNonLiveVariables, 269 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 6/10 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: OVERALL_TIME[ms]: 1041, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 14, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME[ms]: 950, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 18, TOOLS_QUANTIFIERELIM_TIME[ms]: 941, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 193, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 38, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 3, DOMAIN_ISBOTTOM_APPLICATIONS: 14, DOMAIN_ISBOTTOM_TIME[ms]: 42, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 9, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 9, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 11, DAG_COMPRESSION_PROCESSED_NODES: 148, DAG_COMPRESSION_RETAINED_NODES: 40, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...