./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 3e0d5536f9cd1f3a5d711f95a0369e25308fe790 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:23:17,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:23:17,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:23:17,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:23:17,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:23:17,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:23:17,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:23:17,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:23:17,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:23:17,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:23:17,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:23:17,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:23:17,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:23:17,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:23:17,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:23:17,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:23:17,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:23:17,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:23:17,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:23:17,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:23:17,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:23:17,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:23:17,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:23:17,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:23:17,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:23:17,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:23:17,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:23:17,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:23:17,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:23:17,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:23:17,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:23:17,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:23:17,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:23:17,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:23:17,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:23:17,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:23:17,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:23:17,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:23:17,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:23:17,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:23:17,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:23:17,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:23:18,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:23:18,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:23:18,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:23:18,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:23:18,028 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:23:18,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:23:18,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:23:18,028 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:23:18,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:23:18,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:23:18,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:23:18,030 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:23:18,030 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:23:18,030 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:23:18,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:23:18,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:23:18,031 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:23:18,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:23:18,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:23:18,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:23:18,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:23:18,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:23:18,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:23:18,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:23:18,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:23:18,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:23:18,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:23:18,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:23:18,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 3e0d5536f9cd1f3a5d711f95a0369e25308fe790 [2020-10-19 18:23:18,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:23:18,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:23:18,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:23:18,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:23:18,365 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:23:18,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2020-10-19 18:23:18,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ec1cec6/96df55c8451a4089b89cae8c4028d8e7/FLAG40be33d42 [2020-10-19 18:23:18,894 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:23:18,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2020-10-19 18:23:18,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ec1cec6/96df55c8451a4089b89cae8c4028d8e7/FLAG40be33d42 [2020-10-19 18:23:19,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ec1cec6/96df55c8451a4089b89cae8c4028d8e7 [2020-10-19 18:23:19,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:23:19,292 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:23:19,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:19,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:23:19,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:23:19,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231bdf95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19, skipping insertion in model container [2020-10-19 18:23:19,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:23:19,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:23:19,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:19,651 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:23:19,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:19,826 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:23:19,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19 WrapperNode [2020-10-19 18:23:19,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:19,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:23:19,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:23:19,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:23:19,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:23:19,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:23:19,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:23:19,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:23:19,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:23:20,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:23:20,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:23:20,006 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:23:20,006 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-19 18:23:20,007 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-19 18:23:20,008 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-10-19 18:23:20,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:23:20,008 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-19 18:23:20,009 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-19 18:23:20,009 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-19 18:23:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-19 18:23:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-19 18:23:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-10-19 18:23:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-10-19 18:23:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-10-19 18:23:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-10-19 18:23:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-19 18:23:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-10-19 18:23:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-19 18:23:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:23:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:23:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:23:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:23:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-19 18:23:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:23:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-19 18:23:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-19 18:23:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-10-19 18:23:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-19 18:23:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-19 18:23:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-19 18:23:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-10-19 18:23:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-10-19 18:23:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-10-19 18:23:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-10-19 18:23:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-10-19 18:23:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-19 18:23:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-19 18:23:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-19 18:23:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-19 18:23:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:23:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-19 18:23:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:23:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:23:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:23:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:23:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:23:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:23:20,323 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:23:20,472 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-10-19 18:23:20,473 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-10-19 18:23:20,481 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:23:20,527 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-19 18:23:20,527 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-19 18:23:20,630 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:23:20,647 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-19 18:23:20,648 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-19 18:23:20,656 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:23:20,768 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-10-19 18:23:20,769 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-10-19 18:23:20,773 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:23:20,795 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-19 18:23:20,796 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-19 18:23:20,801 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:23:20,828 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-19 18:23:20,829 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-19 18:23:20,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:23:20,876 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-19 18:23:20,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:20 BoogieIcfgContainer [2020-10-19 18:23:20,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:23:20,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:23:20,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:23:20,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:23:20,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:23:19" (1/3) ... [2020-10-19 18:23:20,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c59ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:20, skipping insertion in model container [2020-10-19 18:23:20,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19" (2/3) ... [2020-10-19 18:23:20,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c59ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:20, skipping insertion in model container [2020-10-19 18:23:20,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:20" (3/3) ... [2020-10-19 18:23:20,890 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.c [2020-10-19 18:23:20,903 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:23:20,911 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-19 18:23:20,926 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-19 18:23:20,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:23:20,948 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:23:20,949 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:23:20,949 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:23:20,949 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:23:20,949 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:23:20,950 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:23:20,950 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:23:20,972 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2020-10-19 18:23:20,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:23:20,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:20,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:20,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:20,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:20,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1218581619, now seen corresponding path program 1 times [2020-10-19 18:23:21,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:21,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973670894] [2020-10-19 18:23:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:21,342 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-19 18:23:21,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:21,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:21,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973670894] [2020-10-19 18:23:21,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:21,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:23:21,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043368706] [2020-10-19 18:23:21,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:21,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:21,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:21,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:21,454 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2020-10-19 18:23:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:22,026 INFO L93 Difference]: Finished difference Result 266 states and 385 transitions. [2020-10-19 18:23:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:22,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-19 18:23:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:22,046 INFO L225 Difference]: With dead ends: 266 [2020-10-19 18:23:22,046 INFO L226 Difference]: Without dead ends: 257 [2020-10-19 18:23:22,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-19 18:23:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 229. [2020-10-19 18:23:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-19 18:23:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 324 transitions. [2020-10-19 18:23:22,120 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 324 transitions. Word has length 15 [2020-10-19 18:23:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:22,121 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 324 transitions. [2020-10-19 18:23:22,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 324 transitions. [2020-10-19 18:23:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:23:22,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:22,122 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] [2020-10-19 18:23:22,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:23:22,123 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:22,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1146815466, now seen corresponding path program 1 times [2020-10-19 18:23:22,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:22,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145321536] [2020-10-19 18:23:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:22,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:22,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145321536] [2020-10-19 18:23:22,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:22,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:23:22,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976580168] [2020-10-19 18:23:22,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:23:22,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:22,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:23:22,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:22,399 INFO L87 Difference]: Start difference. First operand 229 states and 324 transitions. Second operand 5 states. [2020-10-19 18:23:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:23,356 INFO L93 Difference]: Finished difference Result 257 states and 364 transitions. [2020-10-19 18:23:23,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:23:23,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-19 18:23:23,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:23,360 INFO L225 Difference]: With dead ends: 257 [2020-10-19 18:23:23,361 INFO L226 Difference]: Without dead ends: 257 [2020-10-19 18:23:23,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-19 18:23:23,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 229. [2020-10-19 18:23:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-19 18:23:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 323 transitions. [2020-10-19 18:23:23,402 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 323 transitions. Word has length 21 [2020-10-19 18:23:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:23,402 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 323 transitions. [2020-10-19 18:23:23,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:23:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 323 transitions. [2020-10-19 18:23:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:23,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:23,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:23,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:23:23,406 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:23,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:23,407 INFO L82 PathProgramCache]: Analyzing trace with hash 533223039, now seen corresponding path program 1 times [2020-10-19 18:23:23,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:23,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601606578] [2020-10-19 18:23:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:23,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601606578] [2020-10-19 18:23:23,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:23,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:23:23,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682677628] [2020-10-19 18:23:23,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:23:23,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:23,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:23:23,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:23:23,665 INFO L87 Difference]: Start difference. First operand 229 states and 323 transitions. Second operand 6 states. [2020-10-19 18:23:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:25,001 INFO L93 Difference]: Finished difference Result 346 states and 472 transitions. [2020-10-19 18:23:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:23:25,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-19 18:23:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:25,007 INFO L225 Difference]: With dead ends: 346 [2020-10-19 18:23:25,007 INFO L226 Difference]: Without dead ends: 345 [2020-10-19 18:23:25,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:23:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-19 18:23:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 302. [2020-10-19 18:23:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-19 18:23:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 412 transitions. [2020-10-19 18:23:25,044 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 412 transitions. Word has length 29 [2020-10-19 18:23:25,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:25,045 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 412 transitions. [2020-10-19 18:23:25,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:23:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 412 transitions. [2020-10-19 18:23:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:23:25,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:25,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:25,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:23:25,047 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:25,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:25,048 INFO L82 PathProgramCache]: Analyzing trace with hash -339825698, now seen corresponding path program 1 times [2020-10-19 18:23:25,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:25,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637467658] [2020-10-19 18:23:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:25,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637467658] [2020-10-19 18:23:25,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:25,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:23:25,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128315130] [2020-10-19 18:23:25,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:23:25,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:25,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:23:25,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:23:25,345 INFO L87 Difference]: Start difference. First operand 302 states and 412 transitions. Second operand 6 states. [2020-10-19 18:23:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:26,271 INFO L93 Difference]: Finished difference Result 364 states and 488 transitions. [2020-10-19 18:23:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:23:26,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-19 18:23:26,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:26,279 INFO L225 Difference]: With dead ends: 364 [2020-10-19 18:23:26,280 INFO L226 Difference]: Without dead ends: 364 [2020-10-19 18:23:26,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:23:26,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-19 18:23:26,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 342. [2020-10-19 18:23:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-19 18:23:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 463 transitions. [2020-10-19 18:23:26,307 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 463 transitions. Word has length 29 [2020-10-19 18:23:26,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:26,308 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 463 transitions. [2020-10-19 18:23:26,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:23:26,308 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 463 transitions. [2020-10-19 18:23:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-19 18:23:26,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:26,312 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] [2020-10-19 18:23:26,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:23:26,312 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:26,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:26,313 INFO L82 PathProgramCache]: Analyzing trace with hash -504962935, now seen corresponding path program 1 times [2020-10-19 18:23:26,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:26,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285404531] [2020-10-19 18:23:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:26,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285404531] [2020-10-19 18:23:26,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:26,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:23:26,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752486310] [2020-10-19 18:23:26,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:23:26,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:26,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:23:26,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:23:26,510 INFO L87 Difference]: Start difference. First operand 342 states and 463 transitions. Second operand 6 states. [2020-10-19 18:23:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:27,279 INFO L93 Difference]: Finished difference Result 341 states and 460 transitions. [2020-10-19 18:23:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:23:27,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-19 18:23:27,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:27,284 INFO L225 Difference]: With dead ends: 341 [2020-10-19 18:23:27,284 INFO L226 Difference]: Without dead ends: 341 [2020-10-19 18:23:27,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:23:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-19 18:23:27,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2020-10-19 18:23:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-19 18:23:27,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 460 transitions. [2020-10-19 18:23:27,299 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 460 transitions. Word has length 39 [2020-10-19 18:23:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:27,300 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 460 transitions. [2020-10-19 18:23:27,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:23:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 460 transitions. [2020-10-19 18:23:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-19 18:23:27,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:27,305 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] [2020-10-19 18:23:27,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:23:27,305 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:27,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:27,306 INFO L82 PathProgramCache]: Analyzing trace with hash -164117486, now seen corresponding path program 1 times [2020-10-19 18:23:27,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:27,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547707370] [2020-10-19 18:23:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:27,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547707370] [2020-10-19 18:23:27,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:27,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:23:27,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862771602] [2020-10-19 18:23:27,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:23:27,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:27,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:23:27,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:23:27,537 INFO L87 Difference]: Start difference. First operand 341 states and 460 transitions. Second operand 8 states. [2020-10-19 18:23:28,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:28,929 INFO L93 Difference]: Finished difference Result 321 states and 425 transitions. [2020-10-19 18:23:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:23:28,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-19 18:23:28,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:28,934 INFO L225 Difference]: With dead ends: 321 [2020-10-19 18:23:28,934 INFO L226 Difference]: Without dead ends: 321 [2020-10-19 18:23:28,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:28,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-19 18:23:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 302. [2020-10-19 18:23:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-19 18:23:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 403 transitions. [2020-10-19 18:23:28,947 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 403 transitions. Word has length 47 [2020-10-19 18:23:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:28,947 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 403 transitions. [2020-10-19 18:23:28,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:23:28,947 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 403 transitions. [2020-10-19 18:23:28,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 18:23:28,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:28,952 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] [2020-10-19 18:23:28,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:23:28,952 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:28,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1322033219, now seen corresponding path program 1 times [2020-10-19 18:23:28,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:28,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017072087] [2020-10-19 18:23:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:23:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-19 18:23:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:29,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017072087] [2020-10-19 18:23:29,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:29,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:29,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715275365] [2020-10-19 18:23:29,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:29,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:29,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:29,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:29,380 INFO L87 Difference]: Start difference. First operand 302 states and 403 transitions. Second operand 12 states. [2020-10-19 18:23:30,447 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-10-19 18:23:30,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:30,604 INFO L93 Difference]: Finished difference Result 324 states and 427 transitions. [2020-10-19 18:23:30,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:23:30,605 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-19 18:23:30,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:30,608 INFO L225 Difference]: With dead ends: 324 [2020-10-19 18:23:30,609 INFO L226 Difference]: Without dead ends: 324 [2020-10-19 18:23:30,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:23:30,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-19 18:23:30,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 316. [2020-10-19 18:23:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-19 18:23:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 419 transitions. [2020-10-19 18:23:30,621 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 419 transitions. Word has length 46 [2020-10-19 18:23:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:30,622 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 419 transitions. [2020-10-19 18:23:30,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 419 transitions. [2020-10-19 18:23:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-19 18:23:30,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:30,624 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] [2020-10-19 18:23:30,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:23:30,625 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:30,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:30,625 INFO L82 PathProgramCache]: Analyzing trace with hash -840477701, now seen corresponding path program 1 times [2020-10-19 18:23:30,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:30,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992121505] [2020-10-19 18:23:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:23:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-19 18:23:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:30,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992121505] [2020-10-19 18:23:30,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:30,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:30,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975716842] [2020-10-19 18:23:30,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:30,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:30,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:30,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:30,980 INFO L87 Difference]: Start difference. First operand 316 states and 419 transitions. Second operand 12 states. [2020-10-19 18:23:32,458 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-10-19 18:23:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:32,757 INFO L93 Difference]: Finished difference Result 324 states and 426 transitions. [2020-10-19 18:23:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:23:32,757 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-19 18:23:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:32,761 INFO L225 Difference]: With dead ends: 324 [2020-10-19 18:23:32,761 INFO L226 Difference]: Without dead ends: 324 [2020-10-19 18:23:32,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:23:32,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-19 18:23:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2020-10-19 18:23:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-19 18:23:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 420 transitions. [2020-10-19 18:23:32,775 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 420 transitions. Word has length 47 [2020-10-19 18:23:32,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:32,776 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 420 transitions. [2020-10-19 18:23:32,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 420 transitions. [2020-10-19 18:23:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-19 18:23:32,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:32,778 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] [2020-10-19 18:23:32,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:23:32,779 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:32,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1756698701, now seen corresponding path program 1 times [2020-10-19 18:23:32,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:32,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524091346] [2020-10-19 18:23:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:23:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-19 18:23:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:32,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524091346] [2020-10-19 18:23:32,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:32,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:23:32,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713253226] [2020-10-19 18:23:32,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:23:32,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:32,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:23:32,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:23:32,999 INFO L87 Difference]: Start difference. First operand 317 states and 420 transitions. Second operand 8 states. [2020-10-19 18:23:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:33,921 INFO L93 Difference]: Finished difference Result 311 states and 409 transitions. [2020-10-19 18:23:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:23:33,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-10-19 18:23:33,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:33,923 INFO L225 Difference]: With dead ends: 311 [2020-10-19 18:23:33,923 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 18:23:33,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 18:23:33,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-19 18:23:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-19 18:23:33,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2020-10-19 18:23:33,928 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 48 [2020-10-19 18:23:33,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:33,928 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2020-10-19 18:23:33,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:23:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2020-10-19 18:23:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-19 18:23:33,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:33,929 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] [2020-10-19 18:23:33,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:23:33,930 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:33,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1076219426, now seen corresponding path program 1 times [2020-10-19 18:23:33,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:33,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906490928] [2020-10-19 18:23:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-19 18:23:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-19 18:23:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:34,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906490928] [2020-10-19 18:23:34,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:34,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:23:34,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814931657] [2020-10-19 18:23:34,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:23:34,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:34,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:23:34,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:23:34,117 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand 8 states. [2020-10-19 18:23:34,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:34,476 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-10-19 18:23:34,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:23:34,476 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-19 18:23:34,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:34,477 INFO L225 Difference]: With dead ends: 101 [2020-10-19 18:23:34,477 INFO L226 Difference]: Without dead ends: 101 [2020-10-19 18:23:34,478 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 [2020-10-19 18:23:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-19 18:23:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-19 18:23:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-19 18:23:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2020-10-19 18:23:34,482 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 54 [2020-10-19 18:23:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:34,483 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2020-10-19 18:23:34,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:23:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2020-10-19 18:23:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-19 18:23:34,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:34,484 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] [2020-10-19 18:23:34,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:23:34,485 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:34,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2078497852, now seen corresponding path program 1 times [2020-10-19 18:23:34,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:34,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452532472] [2020-10-19 18:23:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:34,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452532472] [2020-10-19 18:23:34,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:34,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:23:34,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632212523] [2020-10-19 18:23:34,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:23:34,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:34,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:23:34,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:23:34,722 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 11 states. [2020-10-19 18:23:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:35,059 INFO L93 Difference]: Finished difference Result 122 states and 140 transitions. [2020-10-19 18:23:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:23:35,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-19 18:23:35,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:35,061 INFO L225 Difference]: With dead ends: 122 [2020-10-19 18:23:35,061 INFO L226 Difference]: Without dead ends: 122 [2020-10-19 18:23:35,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:23:35,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-19 18:23:35,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 113. [2020-10-19 18:23:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 18:23:35,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-10-19 18:23:35,066 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 58 [2020-10-19 18:23:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:35,067 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-10-19 18:23:35,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:23:35,067 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-10-19 18:23:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-19 18:23:35,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:35,068 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] [2020-10-19 18:23:35,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:23:35,068 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:35,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:35,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1308229357, now seen corresponding path program 1 times [2020-10-19 18:23:35,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:35,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080501603] [2020-10-19 18:23:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:35,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080501603] [2020-10-19 18:23:35,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:35,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:23:35,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206183844] [2020-10-19 18:23:35,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:23:35,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:35,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:23:35,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:23:35,309 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 11 states. [2020-10-19 18:23:35,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:35,751 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2020-10-19 18:23:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:23:35,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-19 18:23:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:35,753 INFO L225 Difference]: With dead ends: 119 [2020-10-19 18:23:35,753 INFO L226 Difference]: Without dead ends: 112 [2020-10-19 18:23:35,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-19 18:23:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-10-19 18:23:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-19 18:23:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-10-19 18:23:35,758 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 58 [2020-10-19 18:23:35,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:35,759 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-10-19 18:23:35,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:23:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-10-19 18:23:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 18:23:35,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:35,761 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] [2020-10-19 18:23:35,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:23:35,761 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:35,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:35,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1901754731, now seen corresponding path program 1 times [2020-10-19 18:23:35,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:35,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784630187] [2020-10-19 18:23:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:36,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784630187] [2020-10-19 18:23:36,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:36,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:23:36,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249960806] [2020-10-19 18:23:36,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:23:36,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:36,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:23:36,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:23:36,053 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 8 states. [2020-10-19 18:23:36,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:36,440 INFO L93 Difference]: Finished difference Result 198 states and 224 transitions. [2020-10-19 18:23:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:23:36,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-19 18:23:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:36,442 INFO L225 Difference]: With dead ends: 198 [2020-10-19 18:23:36,443 INFO L226 Difference]: Without dead ends: 198 [2020-10-19 18:23:36,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:23:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-19 18:23:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-10-19 18:23:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-19 18:23:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 211 transitions. [2020-10-19 18:23:36,450 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 211 transitions. Word has length 59 [2020-10-19 18:23:36,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:36,450 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 211 transitions. [2020-10-19 18:23:36,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:23:36,451 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 211 transitions. [2020-10-19 18:23:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 18:23:36,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:36,452 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] [2020-10-19 18:23:36,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 18:23:36,452 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:36,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1583865939, now seen corresponding path program 1 times [2020-10-19 18:23:36,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:36,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467895236] [2020-10-19 18:23:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:36,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467895236] [2020-10-19 18:23:36,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:36,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:23:36,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568755809] [2020-10-19 18:23:36,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:23:36,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:36,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:23:36,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:23:36,721 INFO L87 Difference]: Start difference. First operand 185 states and 211 transitions. Second operand 10 states. [2020-10-19 18:23:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:36,899 INFO L93 Difference]: Finished difference Result 173 states and 193 transitions. [2020-10-19 18:23:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:23:36,900 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-19 18:23:36,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:36,901 INFO L225 Difference]: With dead ends: 173 [2020-10-19 18:23:36,901 INFO L226 Difference]: Without dead ends: 173 [2020-10-19 18:23:36,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:23:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-19 18:23:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2020-10-19 18:23:36,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-19 18:23:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 193 transitions. [2020-10-19 18:23:36,912 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 193 transitions. Word has length 59 [2020-10-19 18:23:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:36,913 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 193 transitions. [2020-10-19 18:23:36,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:23:36,914 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 193 transitions. [2020-10-19 18:23:36,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-19 18:23:36,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:36,916 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] [2020-10-19 18:23:36,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:23:36,916 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:36,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:36,919 INFO L82 PathProgramCache]: Analyzing trace with hash -458128180, now seen corresponding path program 1 times [2020-10-19 18:23:36,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:36,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144328733] [2020-10-19 18:23:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-19 18:23:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:37,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144328733] [2020-10-19 18:23:37,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:37,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:37,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155063206] [2020-10-19 18:23:37,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:37,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:37,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:37,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:37,365 INFO L87 Difference]: Start difference. First operand 173 states and 193 transitions. Second operand 12 states. [2020-10-19 18:23:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:37,835 INFO L93 Difference]: Finished difference Result 161 states and 177 transitions. [2020-10-19 18:23:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:23:37,836 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-19 18:23:37,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:37,837 INFO L225 Difference]: With dead ends: 161 [2020-10-19 18:23:37,837 INFO L226 Difference]: Without dead ends: 157 [2020-10-19 18:23:37,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:23:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-19 18:23:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-19 18:23:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-19 18:23:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2020-10-19 18:23:37,842 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 63 [2020-10-19 18:23:37,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:37,842 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2020-10-19 18:23:37,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2020-10-19 18:23:37,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-19 18:23:37,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:37,844 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] [2020-10-19 18:23:37,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:23:37,844 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:37,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1363713922, now seen corresponding path program 1 times [2020-10-19 18:23:37,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:37,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143447684] [2020-10-19 18:23:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-19 18:23:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:38,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143447684] [2020-10-19 18:23:38,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:38,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:23:38,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443434612] [2020-10-19 18:23:38,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:23:38,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:38,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:23:38,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:23:38,042 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand 9 states. [2020-10-19 18:23:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:38,281 INFO L93 Difference]: Finished difference Result 169 states and 185 transitions. [2020-10-19 18:23:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:23:38,281 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-19 18:23:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:38,283 INFO L225 Difference]: With dead ends: 169 [2020-10-19 18:23:38,283 INFO L226 Difference]: Without dead ends: 169 [2020-10-19 18:23:38,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:23:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-19 18:23:38,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2020-10-19 18:23:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 18:23:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 179 transitions. [2020-10-19 18:23:38,288 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 179 transitions. Word has length 65 [2020-10-19 18:23:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:38,289 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 179 transitions. [2020-10-19 18:23:38,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:23:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 179 transitions. [2020-10-19 18:23:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-19 18:23:38,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:38,290 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] [2020-10-19 18:23:38,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:23:38,290 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:38,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:38,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1149867629, now seen corresponding path program 1 times [2020-10-19 18:23:38,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:38,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174384501] [2020-10-19 18:23:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-19 18:23:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:38,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174384501] [2020-10-19 18:23:38,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:38,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:23:38,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987426631] [2020-10-19 18:23:38,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:23:38,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:38,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:23:38,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:23:38,498 INFO L87 Difference]: Start difference. First operand 163 states and 179 transitions. Second operand 9 states. [2020-10-19 18:23:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:38,873 INFO L93 Difference]: Finished difference Result 181 states and 198 transitions. [2020-10-19 18:23:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:23:38,874 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-19 18:23:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:38,876 INFO L225 Difference]: With dead ends: 181 [2020-10-19 18:23:38,876 INFO L226 Difference]: Without dead ends: 179 [2020-10-19 18:23:38,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:23:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-19 18:23:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 167. [2020-10-19 18:23:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-19 18:23:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2020-10-19 18:23:38,884 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 65 [2020-10-19 18:23:38,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:38,885 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2020-10-19 18:23:38,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:23:38,886 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2020-10-19 18:23:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-19 18:23:38,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:38,888 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] [2020-10-19 18:23:38,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:23:38,888 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash -651239234, now seen corresponding path program 1 times [2020-10-19 18:23:38,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:38,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675789339] [2020-10-19 18:23:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-19 18:23:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:39,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675789339] [2020-10-19 18:23:39,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:39,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:39,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714628909] [2020-10-19 18:23:39,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:39,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:39,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:39,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:39,229 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand 12 states. [2020-10-19 18:23:39,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:39,661 INFO L93 Difference]: Finished difference Result 176 states and 189 transitions. [2020-10-19 18:23:39,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:23:39,662 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-19 18:23:39,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:39,663 INFO L225 Difference]: With dead ends: 176 [2020-10-19 18:23:39,663 INFO L226 Difference]: Without dead ends: 176 [2020-10-19 18:23:39,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:23:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-19 18:23:39,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2020-10-19 18:23:39,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-19 18:23:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 180 transitions. [2020-10-19 18:23:39,669 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 180 transitions. Word has length 65 [2020-10-19 18:23:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:39,669 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 180 transitions. [2020-10-19 18:23:39,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 180 transitions. [2020-10-19 18:23:39,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-19 18:23:39,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:39,671 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] [2020-10-19 18:23:39,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:23:39,671 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:39,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:39,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1790483582, now seen corresponding path program 1 times [2020-10-19 18:23:39,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:39,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502252068] [2020-10-19 18:23:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-19 18:23:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:39,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502252068] [2020-10-19 18:23:39,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:39,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:39,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757598149] [2020-10-19 18:23:39,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:39,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:39,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:39,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:39,983 INFO L87 Difference]: Start difference. First operand 167 states and 180 transitions. Second operand 12 states. [2020-10-19 18:23:40,341 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-19 18:23:40,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:40,708 INFO L93 Difference]: Finished difference Result 164 states and 176 transitions. [2020-10-19 18:23:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:23:40,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-19 18:23:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:40,710 INFO L225 Difference]: With dead ends: 164 [2020-10-19 18:23:40,711 INFO L226 Difference]: Without dead ends: 145 [2020-10-19 18:23:40,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:23:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-19 18:23:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-10-19 18:23:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-19 18:23:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2020-10-19 18:23:40,722 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 66 [2020-10-19 18:23:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:40,723 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2020-10-19 18:23:40,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2020-10-19 18:23:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-19 18:23:40,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:40,724 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] [2020-10-19 18:23:40,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 18:23:40,725 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1433605103, now seen corresponding path program 1 times [2020-10-19 18:23:40,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:40,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624525768] [2020-10-19 18:23:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-19 18:23:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:41,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624525768] [2020-10-19 18:23:41,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:41,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:41,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555950076] [2020-10-19 18:23:41,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:41,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:41,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:41,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:41,016 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand 12 states. [2020-10-19 18:23:41,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:41,430 INFO L93 Difference]: Finished difference Result 145 states and 152 transitions. [2020-10-19 18:23:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:23:41,430 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-19 18:23:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:41,431 INFO L225 Difference]: With dead ends: 145 [2020-10-19 18:23:41,431 INFO L226 Difference]: Without dead ends: 145 [2020-10-19 18:23:41,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:23:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-19 18:23:41,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-10-19 18:23:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-19 18:23:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 152 transitions. [2020-10-19 18:23:41,436 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 152 transitions. Word has length 66 [2020-10-19 18:23:41,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:41,437 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 152 transitions. [2020-10-19 18:23:41,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:41,437 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 152 transitions. [2020-10-19 18:23:41,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-19 18:23:41,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:41,438 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] [2020-10-19 18:23:41,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 18:23:41,439 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:41,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:41,439 INFO L82 PathProgramCache]: Analyzing trace with hash 101258944, now seen corresponding path program 1 times [2020-10-19 18:23:41,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:41,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829630418] [2020-10-19 18:23:41,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-19 18:23:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:41,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829630418] [2020-10-19 18:23:41,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:41,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:23:41,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308581367] [2020-10-19 18:23:41,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:23:41,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:41,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:23:41,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:23:41,684 INFO L87 Difference]: Start difference. First operand 145 states and 152 transitions. Second operand 9 states. [2020-10-19 18:23:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:41,910 INFO L93 Difference]: Finished difference Result 140 states and 143 transitions. [2020-10-19 18:23:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:23:41,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-10-19 18:23:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:41,912 INFO L225 Difference]: With dead ends: 140 [2020-10-19 18:23:41,912 INFO L226 Difference]: Without dead ends: 138 [2020-10-19 18:23:41,913 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 [2020-10-19 18:23:41,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-19 18:23:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-19 18:23:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-19 18:23:41,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2020-10-19 18:23:41,918 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 66 [2020-10-19 18:23:41,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:41,919 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions. [2020-10-19 18:23:41,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:23:41,919 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions. [2020-10-19 18:23:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-19 18:23:41,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:41,922 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, 1, 1] [2020-10-19 18:23:41,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 18:23:41,922 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:41,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:41,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1317067693, now seen corresponding path program 1 times [2020-10-19 18:23:41,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:41,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394817764] [2020-10-19 18:23:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 18:23:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-19 18:23:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-19 18:23:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:42,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394817764] [2020-10-19 18:23:42,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:42,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:23:42,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205521155] [2020-10-19 18:23:42,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:23:42,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:42,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:23:42,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:23:42,176 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand 11 states. [2020-10-19 18:23:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:42,395 INFO L93 Difference]: Finished difference Result 108 states and 107 transitions. [2020-10-19 18:23:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:23:42,397 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-10-19 18:23:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:42,398 INFO L225 Difference]: With dead ends: 108 [2020-10-19 18:23:42,398 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:23:42,398 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 [2020-10-19 18:23:42,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:23:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:23:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:23:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:23:42,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2020-10-19 18:23:42,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:42,400 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:23:42,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:23:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:23:42,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:23:42,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 18:23:42,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:23:42 BoogieIcfgContainer [2020-10-19 18:23:42,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:23:42,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:23:42,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:23:42,407 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:23:42,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:20" (3/4) ... [2020-10-19 18:23:42,411 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:23:42,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-19 18:23:42,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2020-10-19 18:23:42,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Complete [2020-10-19 18:23:42,421 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2020-10-19 18:23:42,421 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Power [2020-10-19 18:23:42,421 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2020-10-19 18:23:42,421 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2020-10-19 18:23:42,421 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 18:23:42,421 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2020-10-19 18:23:42,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2020-10-19 18:23:42,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure PoCallDriver [2020-10-19 18:23:42,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 18:23:42,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_CreateClose [2020-10-19 18:23:42,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_InternIoCtl [2020-10-19 18:23:42,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2020-10-19 18:23:42,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2020-10-19 18:23:42,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_DispatchPassThrough [2020-10-19 18:23:42,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_PnP [2020-10-19 18:23:42,439 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2020-10-19 18:23:42,441 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2020-10-19 18:23:42,442 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:23:42,443 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:23:42,583 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:23:42,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:23:42,585 INFO L168 Benchmark]: Toolchain (without parser) took 23299.65 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 497.5 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -111.9 MB). Peak memory consumption was 385.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:42,586 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:23:42,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -193.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:42,587 INFO L168 Benchmark]: Boogie Preprocessor took 73.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:42,587 INFO L168 Benchmark]: RCFGBuilder took 977.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 76.3 MB). Peak memory consumption was 76.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:42,588 INFO L168 Benchmark]: TraceAbstraction took 21525.60 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 345.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -21.1 MB). Peak memory consumption was 323.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:42,588 INFO L168 Benchmark]: Witness Printer took 176.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:42,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 533.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -193.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 977.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 76.3 MB). Peak memory consumption was 76.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21525.60 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 345.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -21.1 MB). Peak memory consumption was 323.9 MB. Max. memory is 11.5 GB. * Witness Printer took 176.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 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: 295]: 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 19 procedures, 244 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.4s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3461 SDtfs, 5150 SDslu, 3843 SDs, 0 SdLazy, 7600 SolverSat, 1274 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 427 GetRequests, 207 SyntacticMatches, 3 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=342occurred 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, 22 MinimizatonAttempts, 209 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1142 NumberOfCodeBlocks, 1142 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1120 ConstructedInterpolants, 0 QuantifiedInterpolants, 309831 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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...