./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb0d163b15d3c265ca05b2b9dcc84c96a983bffe ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:01:26,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:01:26,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:01:26,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:01:26,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:01:26,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:01:27,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:01:27,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:01:27,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:01:27,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:01:27,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:01:27,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:01:27,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:01:27,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:01:27,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:01:27,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:01:27,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:01:27,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:01:27,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:01:27,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:01:27,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:01:27,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:01:27,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:01:27,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:01:27,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:01:27,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:01:27,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:01:27,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:01:27,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:01:27,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:01:27,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:01:27,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:01:27,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:01:27,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:01:27,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:01:27,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:01:27,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:01:27,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:01:27,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:01:27,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:01:27,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:01:27,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 01:01:27,143 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:01:27,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:01:27,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:01:27,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:01:27,147 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:01:27,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:01:27,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:01:27,148 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:01:27,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:01:27,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:01:27,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:01:27,150 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 01:01:27,150 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 01:01:27,150 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 01:01:27,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:01:27,151 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:01:27,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:01:27,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:01:27,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:01:27,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:01:27,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:01:27,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:01:27,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:01:27,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:01:27,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:01:27,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:01:27,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:01:27,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:01:27,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb0d163b15d3c265ca05b2b9dcc84c96a983bffe [2020-11-30 01:01:27,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:01:27,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:01:27,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:01:27,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:01:27,536 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:01:27,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-11-30 01:01:27,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/data/c49a22b31/6409ef8b68504c2ba63d239808a2bd96/FLAG862e63d3d [2020-11-30 01:01:28,268 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:01:28,269 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-11-30 01:01:28,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/data/c49a22b31/6409ef8b68504c2ba63d239808a2bd96/FLAG862e63d3d [2020-11-30 01:01:28,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/data/c49a22b31/6409ef8b68504c2ba63d239808a2bd96 [2020-11-30 01:01:28,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:01:28,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 01:01:28,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:01:28,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:01:28,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:01:28,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:01:28" (1/1) ... [2020-11-30 01:01:28,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207ef1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:28, skipping insertion in model container [2020-11-30 01:01:28,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:01:28" (1/1) ... [2020-11-30 01:01:28,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:01:28,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:01:29,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:01:29,104 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:01:29,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:01:29,201 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:01:29,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:29 WrapperNode [2020-11-30 01:01:29,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:01:29,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:01:29,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:01:29,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:01:29,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:29" (1/1) ... [2020-11-30 01:01:29,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:29" (1/1) ... [2020-11-30 01:01:29,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:29" (1/1) ... [2020-11-30 01:01:29,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:29" (1/1) ... [2020-11-30 01:01:29,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:29" (1/1) ... [2020-11-30 01:01:29,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:29" (1/1) ... [2020-11-30 01:01:29,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:29" (1/1) ... [2020-11-30 01:01:29,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:01:29,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:01:29,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:01:29,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:01:29,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:01:29,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 01:01:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:01:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-30 01:01:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-11-30 01:01:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-11-30 01:01:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-11-30 01:01:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 01:01:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-11-30 01:01:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-11-30 01:01:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-11-30 01:01:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-11-30 01:01:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-11-30 01:01:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-11-30 01:01:29,378 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-11-30 01:01:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 01:01:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-30 01:01:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-30 01:01:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:01:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-30 01:01:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 01:01:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-11-30 01:01:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-11-30 01:01:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-11-30 01:01:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-11-30 01:01:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-11-30 01:01:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-11-30 01:01:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-11-30 01:01:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-11-30 01:01:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-11-30 01:01:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-11-30 01:01:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 01:01:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-11-30 01:01:29,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 01:01:29,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:01:29,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:01:29,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:01:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:01:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:01:29,762 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 01:01:29,881 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2020-11-30 01:01:29,882 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2020-11-30 01:01:29,883 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 01:01:29,967 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2020-11-30 01:01:29,967 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2020-11-30 01:01:30,017 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 01:01:30,063 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-11-30 01:01:30,063 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-11-30 01:01:30,080 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 01:01:30,236 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-11-30 01:01:30,237 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-11-30 01:01:30,252 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:01:30,252 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-30 01:01:30,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:01:30 BoogieIcfgContainer [2020-11-30 01:01:30,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:01:30,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:01:30,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:01:30,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:01:30,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:01:28" (1/3) ... [2020-11-30 01:01:30,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f57086f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:01:30, skipping insertion in model container [2020-11-30 01:01:30,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:29" (2/3) ... [2020-11-30 01:01:30,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f57086f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:01:30, skipping insertion in model container [2020-11-30 01:01:30,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:01:30" (3/3) ... [2020-11-30 01:01:30,270 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.c [2020-11-30 01:01:30,287 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:01:30,292 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 01:01:30,307 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 01:01:30,331 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:01:30,331 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 01:01:30,331 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:01:30,331 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:01:30,331 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:01:30,332 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:01:30,332 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:01:30,332 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:01:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-11-30 01:01:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:01:30,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:30,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:30,379 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:30,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:30,386 INFO L82 PathProgramCache]: Analyzing trace with hash -805088101, now seen corresponding path program 1 times [2020-11-30 01:01:30,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:30,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094407040] [2020-11-30 01:01:30,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:30,742 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-30 01:01:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:30,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094407040] [2020-11-30 01:01:30,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:30,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:01:30,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798742207] [2020-11-30 01:01:30,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:01:30,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:30,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:01:30,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:01:30,895 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 4 states. [2020-11-30 01:01:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:31,586 INFO L93 Difference]: Finished difference Result 167 states and 237 transitions. [2020-11-30 01:01:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:01:31,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-30 01:01:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:31,602 INFO L225 Difference]: With dead ends: 167 [2020-11-30 01:01:31,603 INFO L226 Difference]: Without dead ends: 158 [2020-11-30 01:01:31,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:01:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-30 01:01:31,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-11-30 01:01:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-30 01:01:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 193 transitions. [2020-11-30 01:01:31,673 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 193 transitions. Word has length 15 [2020-11-30 01:01:31,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:31,675 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 193 transitions. [2020-11-30 01:01:31,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:01:31,675 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 193 transitions. [2020-11-30 01:01:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:01:31,679 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:31,679 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] [2020-11-30 01:01:31,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:01:31,680 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:31,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:31,681 INFO L82 PathProgramCache]: Analyzing trace with hash 663407879, now seen corresponding path program 1 times [2020-11-30 01:01:31,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:31,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621776020] [2020-11-30 01:01:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:32,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:32,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621776020] [2020-11-30 01:01:32,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:32,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:01:32,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663817853] [2020-11-30 01:01:32,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:01:32,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:32,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:01:32,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:01:32,050 INFO L87 Difference]: Start difference. First operand 141 states and 193 transitions. Second operand 5 states. [2020-11-30 01:01:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:32,836 INFO L93 Difference]: Finished difference Result 158 states and 215 transitions. [2020-11-30 01:01:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:01:32,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-30 01:01:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:32,840 INFO L225 Difference]: With dead ends: 158 [2020-11-30 01:01:32,841 INFO L226 Difference]: Without dead ends: 158 [2020-11-30 01:01:32,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:01:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-30 01:01:32,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-11-30 01:01:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-30 01:01:32,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 191 transitions. [2020-11-30 01:01:32,860 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 191 transitions. Word has length 21 [2020-11-30 01:01:32,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:32,861 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 191 transitions. [2020-11-30 01:01:32,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:01:32,861 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 191 transitions. [2020-11-30 01:01:32,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 01:01:32,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:32,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:32,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:01:32,863 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:32,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:32,864 INFO L82 PathProgramCache]: Analyzing trace with hash -529077197, now seen corresponding path program 1 times [2020-11-30 01:01:32,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:32,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241624450] [2020-11-30 01:01:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:33,131 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-30 01:01:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:33,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:33,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241624450] [2020-11-30 01:01:33,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:33,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:01:33,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330208472] [2020-11-30 01:01:33,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:01:33,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:33,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:01:33,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:01:33,263 INFO L87 Difference]: Start difference. First operand 141 states and 191 transitions. Second operand 6 states. [2020-11-30 01:01:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:34,206 INFO L93 Difference]: Finished difference Result 222 states and 294 transitions. [2020-11-30 01:01:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:01:34,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-30 01:01:34,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:34,211 INFO L225 Difference]: With dead ends: 222 [2020-11-30 01:01:34,211 INFO L226 Difference]: Without dead ends: 221 [2020-11-30 01:01:34,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:01:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-11-30 01:01:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 196. [2020-11-30 01:01:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-11-30 01:01:34,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2020-11-30 01:01:34,252 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 27 [2020-11-30 01:01:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:34,253 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2020-11-30 01:01:34,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:01:34,254 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2020-11-30 01:01:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 01:01:34,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:34,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:34,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:01:34,256 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:34,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:34,257 INFO L82 PathProgramCache]: Analyzing trace with hash 778367763, now seen corresponding path program 1 times [2020-11-30 01:01:34,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:34,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300502872] [2020-11-30 01:01:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:34,463 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-30 01:01:34,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:34,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:34,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:34,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300502872] [2020-11-30 01:01:34,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:34,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:01:34,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575719110] [2020-11-30 01:01:34,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:01:34,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:34,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:01:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:01:34,592 INFO L87 Difference]: Start difference. First operand 196 states and 260 transitions. Second operand 6 states. [2020-11-30 01:01:34,754 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-30 01:01:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:35,475 INFO L93 Difference]: Finished difference Result 256 states and 337 transitions. [2020-11-30 01:01:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:01:35,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-30 01:01:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:35,478 INFO L225 Difference]: With dead ends: 256 [2020-11-30 01:01:35,479 INFO L226 Difference]: Without dead ends: 256 [2020-11-30 01:01:35,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:01:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-11-30 01:01:35,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 218. [2020-11-30 01:01:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-30 01:01:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 290 transitions. [2020-11-30 01:01:35,501 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 290 transitions. Word has length 28 [2020-11-30 01:01:35,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:35,502 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 290 transitions. [2020-11-30 01:01:35,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:01:35,502 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 290 transitions. [2020-11-30 01:01:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-30 01:01:35,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:35,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:35,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:01:35,508 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:35,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:35,509 INFO L82 PathProgramCache]: Analyzing trace with hash 724282888, now seen corresponding path program 1 times [2020-11-30 01:01:35,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:35,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435523425] [2020-11-30 01:01:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:35,805 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-30 01:01:35,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:35,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:35,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435523425] [2020-11-30 01:01:35,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:35,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:01:35,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612701949] [2020-11-30 01:01:35,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:01:35,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:35,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:01:35,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:01:35,936 INFO L87 Difference]: Start difference. First operand 218 states and 290 transitions. Second operand 7 states. [2020-11-30 01:01:36,210 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-30 01:01:36,519 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-30 01:01:37,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:37,191 INFO L93 Difference]: Finished difference Result 218 states and 289 transitions. [2020-11-30 01:01:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:01:37,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-11-30 01:01:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:37,198 INFO L225 Difference]: With dead ends: 218 [2020-11-30 01:01:37,198 INFO L226 Difference]: Without dead ends: 218 [2020-11-30 01:01:37,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:01:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-30 01:01:37,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-30 01:01:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-30 01:01:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 289 transitions. [2020-11-30 01:01:37,217 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 289 transitions. Word has length 38 [2020-11-30 01:01:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:37,217 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 289 transitions. [2020-11-30 01:01:37,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:01:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 289 transitions. [2020-11-30 01:01:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-30 01:01:37,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:37,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:37,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:01:37,222 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:37,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:37,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1120438894, now seen corresponding path program 1 times [2020-11-30 01:01:37,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:37,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487030107] [2020-11-30 01:01:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:37,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-30 01:01:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:37,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487030107] [2020-11-30 01:01:37,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:37,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 01:01:37,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964266251] [2020-11-30 01:01:37,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:01:37,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:37,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:01:37,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:01:37,604 INFO L87 Difference]: Start difference. First operand 218 states and 289 transitions. Second operand 9 states. [2020-11-30 01:01:37,774 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-30 01:01:38,082 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-30 01:01:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:39,028 INFO L93 Difference]: Finished difference Result 210 states and 273 transitions. [2020-11-30 01:01:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:01:39,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-11-30 01:01:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:39,031 INFO L225 Difference]: With dead ends: 210 [2020-11-30 01:01:39,032 INFO L226 Difference]: Without dead ends: 210 [2020-11-30 01:01:39,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:01:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-11-30 01:01:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 191. [2020-11-30 01:01:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-11-30 01:01:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 251 transitions. [2020-11-30 01:01:39,046 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 251 transitions. Word has length 46 [2020-11-30 01:01:39,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:39,047 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 251 transitions. [2020-11-30 01:01:39,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:01:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 251 transitions. [2020-11-30 01:01:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-30 01:01:39,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:39,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:39,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:01:39,051 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:39,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:39,053 INFO L82 PathProgramCache]: Analyzing trace with hash -202571997, now seen corresponding path program 1 times [2020-11-30 01:01:39,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:39,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091778751] [2020-11-30 01:01:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:39,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:39,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:39,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-30 01:01:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:39,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-30 01:01:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:39,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-11-30 01:01:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:39,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091778751] [2020-11-30 01:01:39,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:39,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:01:39,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525234908] [2020-11-30 01:01:39,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:01:39,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:39,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:01:39,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:01:39,383 INFO L87 Difference]: Start difference. First operand 191 states and 251 transitions. Second operand 8 states. [2020-11-30 01:01:39,560 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-11-30 01:01:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:40,543 INFO L93 Difference]: Finished difference Result 198 states and 258 transitions. [2020-11-30 01:01:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:01:40,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-11-30 01:01:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:40,546 INFO L225 Difference]: With dead ends: 198 [2020-11-30 01:01:40,546 INFO L226 Difference]: Without dead ends: 198 [2020-11-30 01:01:40,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:01:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-30 01:01:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 189. [2020-11-30 01:01:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-11-30 01:01:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 247 transitions. [2020-11-30 01:01:40,558 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 247 transitions. Word has length 52 [2020-11-30 01:01:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:40,558 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 247 transitions. [2020-11-30 01:01:40,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:01:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 247 transitions. [2020-11-30 01:01:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-30 01:01:40,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:40,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:40,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:01:40,562 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:40,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:40,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1084449432, now seen corresponding path program 1 times [2020-11-30 01:01:40,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:40,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847401295] [2020-11-30 01:01:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:40,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:40,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-30 01:01:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:41,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:41,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847401295] [2020-11-30 01:01:41,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:41,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-30 01:01:41,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538104220] [2020-11-30 01:01:41,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:01:41,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:41,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:01:41,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:01:41,113 INFO L87 Difference]: Start difference. First operand 189 states and 247 transitions. Second operand 12 states. [2020-11-30 01:01:41,286 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-30 01:01:41,872 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-11-30 01:01:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:42,625 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2020-11-30 01:01:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:01:42,626 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-11-30 01:01:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:42,627 INFO L225 Difference]: With dead ends: 212 [2020-11-30 01:01:42,628 INFO L226 Difference]: Without dead ends: 212 [2020-11-30 01:01:42,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-11-30 01:01:42,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-11-30 01:01:42,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 189. [2020-11-30 01:01:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-11-30 01:01:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 245 transitions. [2020-11-30 01:01:42,645 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 245 transitions. Word has length 51 [2020-11-30 01:01:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:42,648 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 245 transitions. [2020-11-30 01:01:42,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:01:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 245 transitions. [2020-11-30 01:01:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-30 01:01:42,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:42,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:42,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:01:42,651 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:42,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1181020867, now seen corresponding path program 1 times [2020-11-30 01:01:42,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:42,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893555361] [2020-11-30 01:01:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:42,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:42,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:42,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:42,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-30 01:01:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:42,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893555361] [2020-11-30 01:01:42,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:42,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:01:42,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013911263] [2020-11-30 01:01:42,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:01:42,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:01:42,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:01:42,991 INFO L87 Difference]: Start difference. First operand 189 states and 245 transitions. Second operand 8 states. [2020-11-30 01:01:43,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:43,492 INFO L93 Difference]: Finished difference Result 214 states and 277 transitions. [2020-11-30 01:01:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:01:43,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-11-30 01:01:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:43,495 INFO L225 Difference]: With dead ends: 214 [2020-11-30 01:01:43,496 INFO L226 Difference]: Without dead ends: 214 [2020-11-30 01:01:43,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:01:43,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-30 01:01:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 195. [2020-11-30 01:01:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-11-30 01:01:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 253 transitions. [2020-11-30 01:01:43,508 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 253 transitions. Word has length 53 [2020-11-30 01:01:43,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:43,508 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 253 transitions. [2020-11-30 01:01:43,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:01:43,508 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 253 transitions. [2020-11-30 01:01:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-30 01:01:43,510 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:43,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:43,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 01:01:43,510 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:43,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:43,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1425002687, now seen corresponding path program 1 times [2020-11-30 01:01:43,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:43,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737047849] [2020-11-30 01:01:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:43,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:43,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:43,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-30 01:01:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:43,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:43,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737047849] [2020-11-30 01:01:43,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:43,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-30 01:01:43,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704888121] [2020-11-30 01:01:43,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:01:43,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:43,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:01:43,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:01:43,936 INFO L87 Difference]: Start difference. First operand 195 states and 253 transitions. Second operand 12 states. [2020-11-30 01:01:44,291 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-11-30 01:01:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:45,019 INFO L93 Difference]: Finished difference Result 221 states and 282 transitions. [2020-11-30 01:01:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:01:45,022 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-11-30 01:01:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:45,024 INFO L225 Difference]: With dead ends: 221 [2020-11-30 01:01:45,024 INFO L226 Difference]: Without dead ends: 221 [2020-11-30 01:01:45,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:01:45,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-11-30 01:01:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 200. [2020-11-30 01:01:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-11-30 01:01:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 259 transitions. [2020-11-30 01:01:45,033 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 259 transitions. Word has length 53 [2020-11-30 01:01:45,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:45,033 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 259 transitions. [2020-11-30 01:01:45,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:01:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 259 transitions. [2020-11-30 01:01:45,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-30 01:01:45,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:45,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:45,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 01:01:45,035 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:45,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:45,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1677512253, now seen corresponding path program 1 times [2020-11-30 01:01:45,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:45,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323324435] [2020-11-30 01:01:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:45,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:45,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:45,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:45,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-30 01:01:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:45,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:45,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323324435] [2020-11-30 01:01:45,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:45,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-30 01:01:45,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261151509] [2020-11-30 01:01:45,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:01:45,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:45,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:01:45,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:01:45,423 INFO L87 Difference]: Start difference. First operand 200 states and 259 transitions. Second operand 10 states. [2020-11-30 01:01:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:45,890 INFO L93 Difference]: Finished difference Result 201 states and 257 transitions. [2020-11-30 01:01:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:01:45,891 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-11-30 01:01:45,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:45,891 INFO L225 Difference]: With dead ends: 201 [2020-11-30 01:01:45,892 INFO L226 Difference]: Without dead ends: 95 [2020-11-30 01:01:45,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:01:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-30 01:01:45,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-11-30 01:01:45,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-30 01:01:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-11-30 01:01:45,896 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 53 [2020-11-30 01:01:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:45,901 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-11-30 01:01:45,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:01:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-11-30 01:01:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-30 01:01:45,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:45,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:45,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 01:01:45,903 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:45,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:45,903 INFO L82 PathProgramCache]: Analyzing trace with hash 624658576, now seen corresponding path program 1 times [2020-11-30 01:01:45,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:45,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120918121] [2020-11-30 01:01:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:46,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:46,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:46,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-30 01:01:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 01:01:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:46,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-30 01:01:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:46,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120918121] [2020-11-30 01:01:46,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:46,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-30 01:01:46,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133865162] [2020-11-30 01:01:46,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:01:46,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:46,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:01:46,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:01:46,325 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 12 states. [2020-11-30 01:01:46,507 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-30 01:01:46,675 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-30 01:01:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:47,167 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-11-30 01:01:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:01:47,168 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-11-30 01:01:47,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:47,169 INFO L225 Difference]: With dead ends: 95 [2020-11-30 01:01:47,169 INFO L226 Difference]: Without dead ends: 95 [2020-11-30 01:01:47,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:01:47,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-30 01:01:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-11-30 01:01:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-30 01:01:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-11-30 01:01:47,174 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 60 [2020-11-30 01:01:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:47,174 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-11-30 01:01:47,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:01:47,175 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-11-30 01:01:47,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-30 01:01:47,175 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:47,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:47,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 01:01:47,176 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:47,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:47,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2075251738, now seen corresponding path program 1 times [2020-11-30 01:01:47,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:47,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883278563] [2020-11-30 01:01:47,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:47,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:47,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:47,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-30 01:01:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:47,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 01:01:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-30 01:01:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:47,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:47,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883278563] [2020-11-30 01:01:47,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:47,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-30 01:01:47,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666605421] [2020-11-30 01:01:47,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:01:47,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:47,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:01:47,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:01:47,532 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 12 states. [2020-11-30 01:01:47,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:47,905 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2020-11-30 01:01:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:01:47,905 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-11-30 01:01:47,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:47,906 INFO L225 Difference]: With dead ends: 104 [2020-11-30 01:01:47,906 INFO L226 Difference]: Without dead ends: 94 [2020-11-30 01:01:47,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:01:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-30 01:01:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-11-30 01:01:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-30 01:01:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-11-30 01:01:47,911 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 62 [2020-11-30 01:01:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:47,911 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-11-30 01:01:47,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:01:47,911 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-11-30 01:01:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-30 01:01:47,912 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:47,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:47,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 01:01:47,913 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:47,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:47,913 INFO L82 PathProgramCache]: Analyzing trace with hash -775467898, now seen corresponding path program 1 times [2020-11-30 01:01:47,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:47,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687415497] [2020-11-30 01:01:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:48,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:48,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:48,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:48,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-30 01:01:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:48,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 01:01:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:48,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-30 01:01:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:48,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687415497] [2020-11-30 01:01:48,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:48,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-30 01:01:48,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519248301] [2020-11-30 01:01:48,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:01:48,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:48,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:01:48,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:01:48,310 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 12 states. [2020-11-30 01:01:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:48,755 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2020-11-30 01:01:48,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:01:48,756 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-11-30 01:01:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:48,757 INFO L225 Difference]: With dead ends: 90 [2020-11-30 01:01:48,757 INFO L226 Difference]: Without dead ends: 90 [2020-11-30 01:01:48,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:01:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-30 01:01:48,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-11-30 01:01:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-30 01:01:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2020-11-30 01:01:48,765 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 63 [2020-11-30 01:01:48,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:48,765 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2020-11-30 01:01:48,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:01:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2020-11-30 01:01:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-30 01:01:48,766 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:48,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:48,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 01:01:48,767 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:48,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:48,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1381211479, now seen corresponding path program 1 times [2020-11-30 01:01:48,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:48,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803936655] [2020-11-30 01:01:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-30 01:01:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 01:01:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-30 01:01:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:49,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803936655] [2020-11-30 01:01:49,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:49,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 01:01:49,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569823869] [2020-11-30 01:01:49,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:01:49,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:49,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:01:49,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:01:49,071 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 9 states. [2020-11-30 01:01:49,341 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-30 01:01:49,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:49,393 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-11-30 01:01:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:01:49,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-11-30 01:01:49,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:49,394 INFO L225 Difference]: With dead ends: 104 [2020-11-30 01:01:49,394 INFO L226 Difference]: Without dead ends: 102 [2020-11-30 01:01:49,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:01:49,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-30 01:01:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2020-11-30 01:01:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-30 01:01:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-11-30 01:01:49,398 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 63 [2020-11-30 01:01:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:49,399 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-11-30 01:01:49,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:01:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-11-30 01:01:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-30 01:01:49,399 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:49,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:49,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 01:01:49,400 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:49,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:49,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1611348300, now seen corresponding path program 1 times [2020-11-30 01:01:49,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:49,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746565591] [2020-11-30 01:01:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-30 01:01:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 01:01:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-30 01:01:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:49,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746565591] [2020-11-30 01:01:49,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:49,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 01:01:49,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672159922] [2020-11-30 01:01:49,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:01:49,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:49,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:01:49,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:01:49,749 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 9 states. [2020-11-30 01:01:49,898 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-30 01:01:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:50,208 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-11-30 01:01:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:01:50,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-11-30 01:01:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:50,209 INFO L225 Difference]: With dead ends: 168 [2020-11-30 01:01:50,210 INFO L226 Difference]: Without dead ends: 168 [2020-11-30 01:01:50,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:01:50,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-30 01:01:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2020-11-30 01:01:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-11-30 01:01:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-11-30 01:01:50,217 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 64 [2020-11-30 01:01:50,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:50,217 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-11-30 01:01:50,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:01:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-11-30 01:01:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-30 01:01:50,219 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:50,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:50,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-30 01:01:50,220 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:50,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:50,220 INFO L82 PathProgramCache]: Analyzing trace with hash 802001674, now seen corresponding path program 1 times [2020-11-30 01:01:50,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:50,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171999643] [2020-11-30 01:01:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:50,407 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-30 01:01:50,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:50,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:50,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:50,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-30 01:01:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:50,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 01:01:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-30 01:01:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:50,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:50,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171999643] [2020-11-30 01:01:50,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:50,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-30 01:01:50,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016103581] [2020-11-30 01:01:50,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:01:50,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:50,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:01:50,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:01:50,608 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 12 states. [2020-11-30 01:01:51,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:51,067 INFO L93 Difference]: Finished difference Result 141 states and 148 transitions. [2020-11-30 01:01:51,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:01:51,068 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-11-30 01:01:51,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:51,070 INFO L225 Difference]: With dead ends: 141 [2020-11-30 01:01:51,070 INFO L226 Difference]: Without dead ends: 141 [2020-11-30 01:01:51,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:01:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-30 01:01:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-11-30 01:01:51,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-30 01:01:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 148 transitions. [2020-11-30 01:01:51,080 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 148 transitions. Word has length 64 [2020-11-30 01:01:51,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:51,081 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 148 transitions. [2020-11-30 01:01:51,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:01:51,082 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 148 transitions. [2020-11-30 01:01:51,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-30 01:01:51,084 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:51,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:51,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-30 01:01:51,085 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:51,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1090355466, now seen corresponding path program 1 times [2020-11-30 01:01:51,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:51,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586213207] [2020-11-30 01:01:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-30 01:01:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 01:01:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-30 01:01:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:51,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586213207] [2020-11-30 01:01:51,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:51,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 01:01:51,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970313958] [2020-11-30 01:01:51,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:01:51,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:51,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:01:51,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:01:51,398 INFO L87 Difference]: Start difference. First operand 141 states and 148 transitions. Second operand 9 states. [2020-11-30 01:01:51,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:51,615 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2020-11-30 01:01:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:01:51,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-11-30 01:01:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:51,616 INFO L225 Difference]: With dead ends: 136 [2020-11-30 01:01:51,616 INFO L226 Difference]: Without dead ends: 134 [2020-11-30 01:01:51,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:01:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-30 01:01:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-11-30 01:01:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-30 01:01:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-11-30 01:01:51,622 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 64 [2020-11-30 01:01:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:51,622 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-11-30 01:01:51,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:01:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-11-30 01:01:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-30 01:01:51,623 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:01:51,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:51,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 01:01:51,624 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-30 01:01:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:51,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1231893397, now seen corresponding path program 1 times [2020-11-30 01:01:51,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:51,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774768235] [2020-11-30 01:01:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,797 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-30 01:01:51,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:01:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-30 01:01:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-30 01:01:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 01:01:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-30 01:01:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-30 01:01:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-30 01:01:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:51,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774768235] [2020-11-30 01:01:51,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:51,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-30 01:01:51,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250398796] [2020-11-30 01:01:51,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:01:51,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:51,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:01:51,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:01:51,987 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 11 states. [2020-11-30 01:01:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:52,272 INFO L93 Difference]: Finished difference Result 104 states and 103 transitions. [2020-11-30 01:01:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:01:52,272 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2020-11-30 01:01:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:01:52,273 INFO L225 Difference]: With dead ends: 104 [2020-11-30 01:01:52,273 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:01:52,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:01:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:01:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:01:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:01:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:01:52,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2020-11-30 01:01:52,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:01:52,274 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:01:52,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:01:52,274 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:01:52,274 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:01:52,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-30 01:01:52,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:01:52 BoogieIcfgContainer [2020-11-30 01:01:52,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:01:52,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:01:52,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:01:52,287 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:01:52,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:01:30" (3/4) ... [2020-11-30 01:01:52,291 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:01:52,297 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-30 01:01:52,297 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2020-11-30 01:01:52,297 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Complete [2020-11-30 01:01:52,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2020-11-30 01:01:52,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2020-11-30 01:01:52,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2020-11-30 01:01:52,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-30 01:01:52,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2020-11-30 01:01:52,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2020-11-30 01:01:52,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-30 01:01:52,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2020-11-30 01:01:52,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2020-11-30 01:01:52,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_PnP [2020-11-30 01:01:52,321 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2020-11-30 01:01:52,322 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-30 01:01:52,323 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 01:01:52,324 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:01:52,462 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_25c29f47-b8ab-43dc-ba98-cbb24f4510a3/bin/uautomizer/witness.graphml [2020-11-30 01:01:52,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:01:52,464 INFO L168 Benchmark]: Toolchain (without parser) took 23865.56 ms. Allocated memory was 88.1 MB in the beginning and 237.0 MB in the end (delta: 148.9 MB). Free memory was 56.7 MB in the beginning and 117.7 MB in the end (delta: -61.0 MB). Peak memory consumption was 86.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:01:52,465 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 47.8 MB in the beginning and 47.8 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:01:52,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 602.76 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 56.5 MB in the beginning and 86.6 MB in the end (delta: -30.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:01:52,466 INFO L168 Benchmark]: Boogie Preprocessor took 79.66 ms. Allocated memory is still 113.2 MB. Free memory was 86.6 MB in the beginning and 83.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:01:52,466 INFO L168 Benchmark]: RCFGBuilder took 970.48 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 39.0 MB in the end (delta: 44.8 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:01:52,467 INFO L168 Benchmark]: TraceAbstraction took 22029.26 ms. Allocated memory was 113.2 MB in the beginning and 237.0 MB in the end (delta: 123.7 MB). Free memory was 38.4 MB in the beginning and 127.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:01:52,467 INFO L168 Benchmark]: Witness Printer took 176.22 ms. Allocated memory is still 237.0 MB. Free memory was 127.2 MB in the beginning and 117.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:01:52,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 47.8 MB in the beginning and 47.8 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 602.76 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 56.5 MB in the beginning and 86.6 MB in the end (delta: -30.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.66 ms. Allocated memory is still 113.2 MB. Free memory was 86.6 MB in the beginning and 83.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 970.48 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 39.0 MB in the end (delta: 44.8 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22029.26 ms. Allocated memory was 113.2 MB in the beginning and 237.0 MB in the end (delta: 123.7 MB). Free memory was 38.4 MB in the beginning and 127.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. * Witness Printer took 176.22 ms. Allocated memory is still 237.0 MB. Free memory was 127.2 MB in the beginning and 117.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 288]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 156 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.9s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2435 SDtfs, 3324 SDslu, 2752 SDs, 0 SdLazy, 5874 SolverSat, 919 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 215 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 952 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 933 ConstructedInterpolants, 0 QuantifiedInterpolants, 247665 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...