./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/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 0.2.0-69874e2 [2020-12-01 15:11:23,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:11:23,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:11:23,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:11:23,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:11:23,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:11:23,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:11:23,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:11:23,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:11:23,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:11:23,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:11:23,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:11:23,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:11:23,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:11:23,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:11:23,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:11:23,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:11:23,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:11:23,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:11:23,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:11:23,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:11:23,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:11:23,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:11:23,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:11:23,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:11:23,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:11:23,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:11:23,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:11:23,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:11:23,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:11:23,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:11:23,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:11:23,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:11:23,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:11:23,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:11:23,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:11:23,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:11:23,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:11:23,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:11:23,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:11:23,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:11:23,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-12-01 15:11:23,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:11:23,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:11:23,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:11:23,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:11:23,459 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:11:23,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:11:23,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:11:23,460 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:11:23,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:11:23,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:11:23,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:11:23,461 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 15:11:23,461 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 15:11:23,461 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 15:11:23,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:11:23,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-01 15:11:23,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:11:23,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:11:23,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:11:23,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:11:23,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:11:23,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:11:23,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:11:23,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:11:23,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:11:23,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:11:23,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:11:23,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:11:23,464 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_e9313d59-88d1-4743-862f-c174865ec5f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb0d163b15d3c265ca05b2b9dcc84c96a983bffe [2020-12-01 15:11:23,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:11:23,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:11:23,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:11:23,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:11:23,780 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:11:23,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-12-01 15:11:23,884 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/data/8447d7590/12e4dd9cb1a448ee91de9e7e7a9dc186/FLAGe85c32745 [2020-12-01 15:11:24,561 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:11:24,564 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-12-01 15:11:24,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/data/8447d7590/12e4dd9cb1a448ee91de9e7e7a9dc186/FLAGe85c32745 [2020-12-01 15:11:24,877 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/data/8447d7590/12e4dd9cb1a448ee91de9e7e7a9dc186 [2020-12-01 15:11:24,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:11:24,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-01 15:11:24,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:11:24,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:11:24,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:11:24,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:11:24" (1/1) ... [2020-12-01 15:11:24,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cad9642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:24, skipping insertion in model container [2020-12-01 15:11:24,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:11:24" (1/1) ... [2020-12-01 15:11:24,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:11:24,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:11:25,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:11:25,297 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:11:25,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:11:25,405 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:11:25,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:25 WrapperNode [2020-12-01 15:11:25,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:11:25,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:11:25,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:11:25,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:11:25,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:25" (1/1) ... [2020-12-01 15:11:25,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:25" (1/1) ... [2020-12-01 15:11:25,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:25" (1/1) ... [2020-12-01 15:11:25,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:25" (1/1) ... [2020-12-01 15:11:25,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:25" (1/1) ... [2020-12-01 15:11:25,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:25" (1/1) ... [2020-12-01 15:11:25,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:25" (1/1) ... [2020-12-01 15:11:25,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:11:25,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:11:25,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:11:25,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:11:25,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/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 [2020-12-01 15:11:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-12-01 15:11:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:11:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-12-01 15:11:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-12-01 15:11:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-12-01 15:11:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-12-01 15:11:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-12-01 15:11:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-12-01 15:11:25,568 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-12-01 15:11:25,568 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-12-01 15:11:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-12-01 15:11:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-12-01 15:11:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-12-01 15:11:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-12-01 15:11:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-12-01 15:11:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-12-01 15:11:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-12-01 15:11:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:11:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-12-01 15:11:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-12-01 15:11:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-12-01 15:11:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-12-01 15:11:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-12-01 15:11:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-12-01 15:11:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-12-01 15:11:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-12-01 15:11:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-12-01 15:11:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-12-01 15:11:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-12-01 15:11:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-12-01 15:11:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-12-01 15:11:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-12-01 15:11:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-12-01 15:11:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:11:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:11:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:11:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:11:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:11:25,859 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-01 15:11:25,965 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2020-12-01 15:11:25,966 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2020-12-01 15:11:25,968 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-01 15:11:26,054 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2020-12-01 15:11:26,054 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2020-12-01 15:11:26,104 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-01 15:11:26,147 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-12-01 15:11:26,148 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-12-01 15:11:26,172 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-01 15:11:26,387 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-12-01 15:11:26,387 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-12-01 15:11:26,410 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:11:26,411 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-12-01 15:11:26,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:11:26 BoogieIcfgContainer [2020-12-01 15:11:26,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:11:26,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:11:26,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:11:26,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:11:26,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:11:24" (1/3) ... [2020-12-01 15:11:26,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641840ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:11:26, skipping insertion in model container [2020-12-01 15:11:26,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:11:25" (2/3) ... [2020-12-01 15:11:26,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641840ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:11:26, skipping insertion in model container [2020-12-01 15:11:26,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:11:26" (3/3) ... [2020-12-01 15:11:26,429 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.c [2020-12-01 15:11:26,445 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:11:26,450 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:11:26,462 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:11:26,495 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:11:26,496 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-01 15:11:26,496 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:11:26,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:11:26,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:11:26,496 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:11:26,497 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:11:26,498 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:11:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-12-01 15:11:26,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:11:26,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:26,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:11:26,539 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:26,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:26,551 INFO L82 PathProgramCache]: Analyzing trace with hash -805088101, now seen corresponding path program 1 times [2020-12-01 15:11:26,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:26,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60991374] [2020-12-01 15:11:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:27,021 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-12-01 15:11:27,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:27,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60991374] [2020-12-01 15:11:27,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:27,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:11:27,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366281741] [2020-12-01 15:11:27,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:11:27,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:27,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:11:27,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:11:27,219 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 4 states. [2020-12-01 15:11:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:27,930 INFO L93 Difference]: Finished difference Result 167 states and 237 transitions. [2020-12-01 15:11:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:11:27,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-01 15:11:27,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:27,949 INFO L225 Difference]: With dead ends: 167 [2020-12-01 15:11:27,949 INFO L226 Difference]: Without dead ends: 158 [2020-12-01 15:11:27,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:11:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-01 15:11:27,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-12-01 15:11:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-01 15:11:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 193 transitions. [2020-12-01 15:11:28,005 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 193 transitions. Word has length 15 [2020-12-01 15:11:28,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:28,005 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 193 transitions. [2020-12-01 15:11:28,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:11:28,006 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 193 transitions. [2020-12-01 15:11:28,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:11:28,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:28,007 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] [2020-12-01 15:11:28,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:11:28,007 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash 663407879, now seen corresponding path program 1 times [2020-12-01 15:11:28,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:28,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63789563] [2020-12-01 15:11:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:28,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:28,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:28,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63789563] [2020-12-01 15:11:28,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:28,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:11:28,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731361012] [2020-12-01 15:11:28,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:11:28,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:28,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:11:28,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:11:28,291 INFO L87 Difference]: Start difference. First operand 141 states and 193 transitions. Second operand 5 states. [2020-12-01 15:11:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:28,932 INFO L93 Difference]: Finished difference Result 158 states and 215 transitions. [2020-12-01 15:11:28,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:11:28,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-01 15:11:28,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:28,946 INFO L225 Difference]: With dead ends: 158 [2020-12-01 15:11:28,946 INFO L226 Difference]: Without dead ends: 158 [2020-12-01 15:11:28,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:11:28,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-01 15:11:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-12-01 15:11:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-01 15:11:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 191 transitions. [2020-12-01 15:11:28,967 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 191 transitions. Word has length 21 [2020-12-01 15:11:28,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:28,967 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 191 transitions. [2020-12-01 15:11:28,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:11:28,968 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 191 transitions. [2020-12-01 15:11:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 15:11:28,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:28,969 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] [2020-12-01 15:11:28,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:11:28,969 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:28,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:28,970 INFO L82 PathProgramCache]: Analyzing trace with hash -529077197, now seen corresponding path program 1 times [2020-12-01 15:11:28,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:28,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965590492] [2020-12-01 15:11:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:29,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:29,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:29,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965590492] [2020-12-01 15:11:29,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:29,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:11:29,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184093661] [2020-12-01 15:11:29,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:11:29,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:29,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:11:29,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:11:29,332 INFO L87 Difference]: Start difference. First operand 141 states and 191 transitions. Second operand 6 states. [2020-12-01 15:11:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:30,091 INFO L93 Difference]: Finished difference Result 222 states and 294 transitions. [2020-12-01 15:11:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:11:30,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-01 15:11:30,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:30,094 INFO L225 Difference]: With dead ends: 222 [2020-12-01 15:11:30,094 INFO L226 Difference]: Without dead ends: 221 [2020-12-01 15:11:30,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:11:30,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-01 15:11:30,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 196. [2020-12-01 15:11:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-01 15:11:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2020-12-01 15:11:30,125 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 27 [2020-12-01 15:11:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:30,125 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2020-12-01 15:11:30,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:11:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2020-12-01 15:11:30,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 15:11:30,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:30,127 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] [2020-12-01 15:11:30,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:11:30,127 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:30,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:30,128 INFO L82 PathProgramCache]: Analyzing trace with hash 778367763, now seen corresponding path program 1 times [2020-12-01 15:11:30,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:30,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194994813] [2020-12-01 15:11:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:30,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:30,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:30,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194994813] [2020-12-01 15:11:30,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:30,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:11:30,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773361583] [2020-12-01 15:11:30,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:11:30,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:30,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:11:30,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:11:30,380 INFO L87 Difference]: Start difference. First operand 196 states and 260 transitions. Second operand 6 states. [2020-12-01 15:11:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:31,018 INFO L93 Difference]: Finished difference Result 256 states and 337 transitions. [2020-12-01 15:11:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:11:31,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-01 15:11:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:31,027 INFO L225 Difference]: With dead ends: 256 [2020-12-01 15:11:31,027 INFO L226 Difference]: Without dead ends: 256 [2020-12-01 15:11:31,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:11:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-12-01 15:11:31,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 218. [2020-12-01 15:11:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-01 15:11:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 290 transitions. [2020-12-01 15:11:31,054 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 290 transitions. Word has length 28 [2020-12-01 15:11:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:31,054 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 290 transitions. [2020-12-01 15:11:31,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:11:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 290 transitions. [2020-12-01 15:11:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-01 15:11:31,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:31,057 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] [2020-12-01 15:11:31,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:11:31,057 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:31,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:31,058 INFO L82 PathProgramCache]: Analyzing trace with hash 724282888, now seen corresponding path program 1 times [2020-12-01 15:11:31,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:31,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379769793] [2020-12-01 15:11:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:31,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:31,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:31,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379769793] [2020-12-01 15:11:31,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:31,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 15:11:31,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412436894] [2020-12-01 15:11:31,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:11:31,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:31,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:11:31,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:11:31,359 INFO L87 Difference]: Start difference. First operand 218 states and 290 transitions. Second operand 7 states. [2020-12-01 15:11:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:32,266 INFO L93 Difference]: Finished difference Result 218 states and 289 transitions. [2020-12-01 15:11:32,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:11:32,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-12-01 15:11:32,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:32,269 INFO L225 Difference]: With dead ends: 218 [2020-12-01 15:11:32,269 INFO L226 Difference]: Without dead ends: 218 [2020-12-01 15:11:32,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:11:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-01 15:11:32,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-01 15:11:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-01 15:11:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 289 transitions. [2020-12-01 15:11:32,285 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 289 transitions. Word has length 38 [2020-12-01 15:11:32,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:32,286 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 289 transitions. [2020-12-01 15:11:32,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:11:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 289 transitions. [2020-12-01 15:11:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-01 15:11:32,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:32,296 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] [2020-12-01 15:11:32,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:11:32,297 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:32,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:32,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1120438894, now seen corresponding path program 1 times [2020-12-01 15:11:32,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:32,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510708421] [2020-12-01 15:11:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:32,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:32,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:32,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-01 15:11:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:32,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510708421] [2020-12-01 15:11:32,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:32,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 15:11:32,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119884] [2020-12-01 15:11:32,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:11:32,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:32,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:11:32,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:11:32,548 INFO L87 Difference]: Start difference. First operand 218 states and 289 transitions. Second operand 9 states. [2020-12-01 15:11:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:33,562 INFO L93 Difference]: Finished difference Result 210 states and 273 transitions. [2020-12-01 15:11:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:11:33,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-12-01 15:11:33,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:33,566 INFO L225 Difference]: With dead ends: 210 [2020-12-01 15:11:33,566 INFO L226 Difference]: Without dead ends: 210 [2020-12-01 15:11:33,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:11:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-12-01 15:11:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 191. [2020-12-01 15:11:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-12-01 15:11:33,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 251 transitions. [2020-12-01 15:11:33,587 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 251 transitions. Word has length 46 [2020-12-01 15:11:33,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:33,588 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 251 transitions. [2020-12-01 15:11:33,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:11:33,588 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 251 transitions. [2020-12-01 15:11:33,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-01 15:11:33,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:33,592 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] [2020-12-01 15:11:33,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:11:33,593 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:33,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:33,595 INFO L82 PathProgramCache]: Analyzing trace with hash -202571997, now seen corresponding path program 1 times [2020-12-01 15:11:33,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:33,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252520457] [2020-12-01 15:11:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:33,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:33,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:33,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-12-01 15:11:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-01 15:11:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:33,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-12-01 15:11:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:33,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252520457] [2020-12-01 15:11:33,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:33,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 15:11:33,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763748445] [2020-12-01 15:11:33,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:11:33,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:33,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:11:33,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:11:33,883 INFO L87 Difference]: Start difference. First operand 191 states and 251 transitions. Second operand 8 states. [2020-12-01 15:11:34,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:34,615 INFO L93 Difference]: Finished difference Result 198 states and 258 transitions. [2020-12-01 15:11:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:11:34,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-12-01 15:11:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:34,618 INFO L225 Difference]: With dead ends: 198 [2020-12-01 15:11:34,619 INFO L226 Difference]: Without dead ends: 198 [2020-12-01 15:11:34,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:11:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-01 15:11:34,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 189. [2020-12-01 15:11:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-01 15:11:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 247 transitions. [2020-12-01 15:11:34,634 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 247 transitions. Word has length 52 [2020-12-01 15:11:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:34,635 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 247 transitions. [2020-12-01 15:11:34,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:11:34,637 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 247 transitions. [2020-12-01 15:11:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-01 15:11:34,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:34,643 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] [2020-12-01 15:11:34,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:11:34,644 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:34,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1084449432, now seen corresponding path program 1 times [2020-12-01 15:11:34,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:34,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87608429] [2020-12-01 15:11:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:34,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:34,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-12-01 15:11:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:34,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:34,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87608429] [2020-12-01 15:11:34,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:34,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-01 15:11:34,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431086873] [2020-12-01 15:11:34,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:11:34,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:34,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:11:34,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:11:34,978 INFO L87 Difference]: Start difference. First operand 189 states and 247 transitions. Second operand 12 states. [2020-12-01 15:11:35,581 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-12-01 15:11:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:36,112 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2020-12-01 15:11:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 15:11:36,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-12-01 15:11:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:36,114 INFO L225 Difference]: With dead ends: 212 [2020-12-01 15:11:36,114 INFO L226 Difference]: Without dead ends: 212 [2020-12-01 15:11:36,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-12-01 15:11:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-01 15:11:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 189. [2020-12-01 15:11:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-01 15:11:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 245 transitions. [2020-12-01 15:11:36,122 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 245 transitions. Word has length 51 [2020-12-01 15:11:36,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:36,123 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 245 transitions. [2020-12-01 15:11:36,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:11:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 245 transitions. [2020-12-01 15:11:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-01 15:11:36,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:36,124 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] [2020-12-01 15:11:36,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:11:36,124 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:36,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1181020867, now seen corresponding path program 1 times [2020-12-01 15:11:36,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:36,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015283743] [2020-12-01 15:11:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:36,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:36,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:36,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-12-01 15:11:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:36,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:36,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015283743] [2020-12-01 15:11:36,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:36,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 15:11:36,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442994429] [2020-12-01 15:11:36,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:11:36,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:36,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:11:36,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:11:36,331 INFO L87 Difference]: Start difference. First operand 189 states and 245 transitions. Second operand 8 states. [2020-12-01 15:11:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:36,735 INFO L93 Difference]: Finished difference Result 214 states and 277 transitions. [2020-12-01 15:11:36,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:11:36,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-12-01 15:11:36,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:36,739 INFO L225 Difference]: With dead ends: 214 [2020-12-01 15:11:36,739 INFO L226 Difference]: Without dead ends: 214 [2020-12-01 15:11:36,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:11:36,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-01 15:11:36,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 195. [2020-12-01 15:11:36,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-12-01 15:11:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 253 transitions. [2020-12-01 15:11:36,750 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 253 transitions. Word has length 53 [2020-12-01 15:11:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:36,750 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 253 transitions. [2020-12-01 15:11:36,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:11:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 253 transitions. [2020-12-01 15:11:36,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-01 15:11:36,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:36,752 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] [2020-12-01 15:11:36,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:11:36,752 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:36,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1425002687, now seen corresponding path program 1 times [2020-12-01 15:11:36,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:36,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086248230] [2020-12-01 15:11:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:36,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:36,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-12-01 15:11:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:37,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:37,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086248230] [2020-12-01 15:11:37,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:37,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-01 15:11:37,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958501369] [2020-12-01 15:11:37,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:11:37,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:37,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:11:37,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:11:37,063 INFO L87 Difference]: Start difference. First operand 195 states and 253 transitions. Second operand 12 states. [2020-12-01 15:11:37,391 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-12-01 15:11:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:38,149 INFO L93 Difference]: Finished difference Result 221 states and 282 transitions. [2020-12-01 15:11:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:11:38,149 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-12-01 15:11:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:38,151 INFO L225 Difference]: With dead ends: 221 [2020-12-01 15:11:38,152 INFO L226 Difference]: Without dead ends: 221 [2020-12-01 15:11:38,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-12-01 15:11:38,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-01 15:11:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 200. [2020-12-01 15:11:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-01 15:11:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 259 transitions. [2020-12-01 15:11:38,160 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 259 transitions. Word has length 53 [2020-12-01 15:11:38,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:38,161 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 259 transitions. [2020-12-01 15:11:38,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:11:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 259 transitions. [2020-12-01 15:11:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-01 15:11:38,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:38,162 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] [2020-12-01 15:11:38,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 15:11:38,163 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:38,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:38,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1677512253, now seen corresponding path program 1 times [2020-12-01 15:11:38,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:38,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066646840] [2020-12-01 15:11:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:38,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:38,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:38,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:38,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-12-01 15:11:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:38,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:38,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066646840] [2020-12-01 15:11:38,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:38,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-01 15:11:38,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226157231] [2020-12-01 15:11:38,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:11:38,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:38,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:11:38,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:11:38,410 INFO L87 Difference]: Start difference. First operand 200 states and 259 transitions. Second operand 10 states. [2020-12-01 15:11:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:38,810 INFO L93 Difference]: Finished difference Result 201 states and 257 transitions. [2020-12-01 15:11:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:11:38,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-12-01 15:11:38,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:38,811 INFO L225 Difference]: With dead ends: 201 [2020-12-01 15:11:38,811 INFO L226 Difference]: Without dead ends: 95 [2020-12-01 15:11:38,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:11:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-01 15:11:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-12-01 15:11:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-01 15:11:38,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-12-01 15:11:38,816 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 53 [2020-12-01 15:11:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:38,816 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-12-01 15:11:38,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:11:38,817 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-12-01 15:11:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-01 15:11:38,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:38,818 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] [2020-12-01 15:11:38,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-01 15:11:38,818 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:38,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:38,819 INFO L82 PathProgramCache]: Analyzing trace with hash 624658576, now seen corresponding path program 1 times [2020-12-01 15:11:38,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:38,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844313253] [2020-12-01 15:11:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:38,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-01 15:11:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:11:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-01 15:11:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:39,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844313253] [2020-12-01 15:11:39,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:39,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-01 15:11:39,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482927723] [2020-12-01 15:11:39,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:11:39,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:39,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:11:39,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:11:39,079 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 12 states. [2020-12-01 15:11:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:39,599 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-12-01 15:11:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:11:39,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-12-01 15:11:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:39,601 INFO L225 Difference]: With dead ends: 95 [2020-12-01 15:11:39,601 INFO L226 Difference]: Without dead ends: 95 [2020-12-01 15:11:39,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-12-01 15:11:39,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-01 15:11:39,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-12-01 15:11:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-01 15:11:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-12-01 15:11:39,605 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 60 [2020-12-01 15:11:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:39,605 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-12-01 15:11:39,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:11:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-12-01 15:11:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-01 15:11:39,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:39,607 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] [2020-12-01 15:11:39,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-01 15:11:39,607 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:39,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:39,607 INFO L82 PathProgramCache]: Analyzing trace with hash 2075251738, now seen corresponding path program 1 times [2020-12-01 15:11:39,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:39,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445796227] [2020-12-01 15:11:39,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-01 15:11:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:11:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-01 15:11:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:39,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445796227] [2020-12-01 15:11:39,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:39,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-01 15:11:39,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897363293] [2020-12-01 15:11:39,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:11:39,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:39,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:11:39,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:11:39,853 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 12 states. [2020-12-01 15:11:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:40,098 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2020-12-01 15:11:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:11:40,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-12-01 15:11:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:40,100 INFO L225 Difference]: With dead ends: 104 [2020-12-01 15:11:40,100 INFO L226 Difference]: Without dead ends: 94 [2020-12-01 15:11:40,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:11:40,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-01 15:11:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-12-01 15:11:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-01 15:11:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-12-01 15:11:40,111 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 62 [2020-12-01 15:11:40,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:40,111 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-12-01 15:11:40,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:11:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-12-01 15:11:40,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-01 15:11:40,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:40,113 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] [2020-12-01 15:11:40,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-01 15:11:40,113 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash -775467898, now seen corresponding path program 1 times [2020-12-01 15:11:40,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:40,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524646132] [2020-12-01 15:11:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-01 15:11:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:11:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-01 15:11:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:40,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524646132] [2020-12-01 15:11:40,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:40,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-01 15:11:40,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086855665] [2020-12-01 15:11:40,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:11:40,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:40,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:11:40,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:11:40,371 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 12 states. [2020-12-01 15:11:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:40,652 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2020-12-01 15:11:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:11:40,652 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-12-01 15:11:40,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:40,653 INFO L225 Difference]: With dead ends: 90 [2020-12-01 15:11:40,654 INFO L226 Difference]: Without dead ends: 90 [2020-12-01 15:11:40,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:11:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-01 15:11:40,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-12-01 15:11:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-01 15:11:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2020-12-01 15:11:40,658 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 63 [2020-12-01 15:11:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:40,658 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2020-12-01 15:11:40,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:11:40,658 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2020-12-01 15:11:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-01 15:11:40,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:40,659 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] [2020-12-01 15:11:40,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-01 15:11:40,660 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:40,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1381211479, now seen corresponding path program 1 times [2020-12-01 15:11:40,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:40,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706027654] [2020-12-01 15:11:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-01 15:11:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:11:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-01 15:11:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:40,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706027654] [2020-12-01 15:11:40,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:40,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 15:11:40,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427989520] [2020-12-01 15:11:40,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:11:40,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:40,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:11:40,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:11:40,867 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 9 states. [2020-12-01 15:11:41,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:41,063 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-12-01 15:11:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:11:41,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-12-01 15:11:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:41,064 INFO L225 Difference]: With dead ends: 104 [2020-12-01 15:11:41,064 INFO L226 Difference]: Without dead ends: 102 [2020-12-01 15:11:41,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:11:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-01 15:11:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2020-12-01 15:11:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-01 15:11:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-12-01 15:11:41,068 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 63 [2020-12-01 15:11:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:41,069 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-12-01 15:11:41,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:11:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-12-01 15:11:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-01 15:11:41,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:41,070 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] [2020-12-01 15:11:41,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-01 15:11:41,070 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:41,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:41,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1611348300, now seen corresponding path program 1 times [2020-12-01 15:11:41,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:41,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627354929] [2020-12-01 15:11:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-01 15:11:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:11:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-01 15:11:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:41,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627354929] [2020-12-01 15:11:41,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:41,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 15:11:41,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525753831] [2020-12-01 15:11:41,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:11:41,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:41,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:11:41,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:11:41,324 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 9 states. [2020-12-01 15:11:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:41,647 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-12-01 15:11:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:11:41,648 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-01 15:11:41,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:41,649 INFO L225 Difference]: With dead ends: 168 [2020-12-01 15:11:41,649 INFO L226 Difference]: Without dead ends: 168 [2020-12-01 15:11:41,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:11:41,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-12-01 15:11:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2020-12-01 15:11:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-01 15:11:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-12-01 15:11:41,657 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 64 [2020-12-01 15:11:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:41,658 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-12-01 15:11:41,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:11:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-12-01 15:11:41,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-01 15:11:41,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:41,659 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] [2020-12-01 15:11:41,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-01 15:11:41,659 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:41,661 INFO L82 PathProgramCache]: Analyzing trace with hash 802001674, now seen corresponding path program 1 times [2020-12-01 15:11:41,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:41,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540782626] [2020-12-01 15:11:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-01 15:11:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:11:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-01 15:11:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:41,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540782626] [2020-12-01 15:11:41,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:41,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-01 15:11:41,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432321488] [2020-12-01 15:11:41,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:11:41,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:41,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:11:41,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:11:41,964 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 12 states. [2020-12-01 15:11:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:42,258 INFO L93 Difference]: Finished difference Result 141 states and 148 transitions. [2020-12-01 15:11:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:11:42,259 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-12-01 15:11:42,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:42,260 INFO L225 Difference]: With dead ends: 141 [2020-12-01 15:11:42,260 INFO L226 Difference]: Without dead ends: 141 [2020-12-01 15:11:42,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:11:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-01 15:11:42,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-12-01 15:11:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-01 15:11:42,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 148 transitions. [2020-12-01 15:11:42,266 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 148 transitions. Word has length 64 [2020-12-01 15:11:42,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:42,266 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 148 transitions. [2020-12-01 15:11:42,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:11:42,266 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 148 transitions. [2020-12-01 15:11:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-01 15:11:42,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:42,268 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] [2020-12-01 15:11:42,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-01 15:11:42,268 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1090355466, now seen corresponding path program 1 times [2020-12-01 15:11:42,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:42,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296378559] [2020-12-01 15:11:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-01 15:11:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:11:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-01 15:11:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:42,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296378559] [2020-12-01 15:11:42,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:42,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 15:11:42,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841109669] [2020-12-01 15:11:42,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:11:42,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:42,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:11:42,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:11:42,499 INFO L87 Difference]: Start difference. First operand 141 states and 148 transitions. Second operand 9 states. [2020-12-01 15:11:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:42,719 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2020-12-01 15:11:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:11:42,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-12-01 15:11:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:42,721 INFO L225 Difference]: With dead ends: 136 [2020-12-01 15:11:42,721 INFO L226 Difference]: Without dead ends: 134 [2020-12-01 15:11:42,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:11:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-01 15:11:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-12-01 15:11:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-01 15:11:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-12-01 15:11:42,730 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 64 [2020-12-01 15:11:42,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:42,731 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-12-01 15:11:42,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:11:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-12-01 15:11:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-01 15:11:42,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:11:42,733 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] [2020-12-01 15:11:42,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-01 15:11:42,733 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-12-01 15:11:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:11:42,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1231893397, now seen corresponding path program 1 times [2020-12-01 15:11:42,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:11:42,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668768619] [2020-12-01 15:11:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:11:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 15:11:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-01 15:11:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-01 15:11:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:11:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-01 15:11:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-01 15:11:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-12-01 15:11:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:11:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:11:42,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668768619] [2020-12-01 15:11:42,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:11:42,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-01 15:11:42,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532274877] [2020-12-01 15:11:42,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:11:42,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:11:42,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:11:42,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:11:42,991 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 11 states. [2020-12-01 15:11:43,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:11:43,188 INFO L93 Difference]: Finished difference Result 104 states and 103 transitions. [2020-12-01 15:11:43,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:11:43,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2020-12-01 15:11:43,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:11:43,189 INFO L225 Difference]: With dead ends: 104 [2020-12-01 15:11:43,189 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:11:43,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:11:43,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:11:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:11:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:11:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:11:43,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2020-12-01 15:11:43,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:11:43,190 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:11:43,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:11:43,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:11:43,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:11:43,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-01 15:11:43,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:11:43 BoogieIcfgContainer [2020-12-01 15:11:43,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:11:43,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:11:43,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:11:43,196 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:11:43,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:11:26" (3/4) ... [2020-12-01 15:11:43,199 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:11:43,204 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-12-01 15:11:43,204 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2020-12-01 15:11:43,204 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Complete [2020-12-01 15:11:43,205 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2020-12-01 15:11:43,205 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2020-12-01 15:11:43,205 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2020-12-01 15:11:43,205 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-12-01 15:11:43,205 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2020-12-01 15:11:43,205 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2020-12-01 15:11:43,205 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-12-01 15:11:43,205 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2020-12-01 15:11:43,206 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2020-12-01 15:11:43,206 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_PnP [2020-12-01 15:11:43,222 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2020-12-01 15:11:43,223 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-12-01 15:11:43,224 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-01 15:11:43,225 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:11:43,352 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e9313d59-88d1-4743-862f-c174865ec5f4/bin/uautomizer/witness.graphml [2020-12-01 15:11:43,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:11:43,353 INFO L168 Benchmark]: Toolchain (without parser) took 18472.23 ms. Allocated memory was 98.6 MB in the beginning and 234.9 MB in the end (delta: 136.3 MB). Free memory was 68.1 MB in the beginning and 204.4 MB in the end (delta: -136.3 MB). Peak memory consumption was 132.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:11:43,355 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 81.8 MB. Free memory was 41.8 MB in the beginning and 41.7 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:11:43,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.26 ms. Allocated memory is still 98.6 MB. Free memory was 67.9 MB in the beginning and 73.3 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:11:43,355 INFO L168 Benchmark]: Boogie Preprocessor took 66.15 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 70.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:11:43,356 INFO L168 Benchmark]: RCFGBuilder took 940.38 ms. Allocated memory is still 98.6 MB. Free memory was 70.9 MB in the beginning and 69.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:11:43,356 INFO L168 Benchmark]: TraceAbstraction took 16775.50 ms. Allocated memory was 98.6 MB in the beginning and 234.9 MB in the end (delta: 136.3 MB). Free memory was 69.3 MB in the beginning and 75.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 130.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:11:43,357 INFO L168 Benchmark]: Witness Printer took 156.80 ms. Allocated memory is still 234.9 MB. Free memory was 74.6 MB in the beginning and 204.4 MB in the end (delta: -129.8 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:11:43,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 81.8 MB. Free memory was 41.8 MB in the beginning and 41.7 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 524.26 ms. Allocated memory is still 98.6 MB. Free memory was 67.9 MB in the beginning and 73.3 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.15 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 70.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 940.38 ms. Allocated memory is still 98.6 MB. Free memory was 70.9 MB in the beginning and 69.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16775.50 ms. Allocated memory was 98.6 MB in the beginning and 234.9 MB in the end (delta: 136.3 MB). Free memory was 69.3 MB in the beginning and 75.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 130.5 MB. Max. memory is 16.1 GB. * Witness Printer took 156.80 ms. Allocated memory is still 234.9 MB. Free memory was 74.6 MB in the beginning and 204.4 MB in the end (delta: -129.8 MB). Peak memory consumption was 2.4 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: 16.6s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 10.8s, 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, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 362 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 5.1s 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, 4.5s 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...