./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 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_simpl1.cil.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 fb0d163b15d3c265ca05b2b9dcc84c96a983bffe ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 18:23:17,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:23:17,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:23:17,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:23:17,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:23:17,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:23:17,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:23:17,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:23:17,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:23:17,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:23:17,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:23:17,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:23:17,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:23:17,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:23:17,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:23:17,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:23:17,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:23:17,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:23:17,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:23:17,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:23:17,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:23:17,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:23:17,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:23:17,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:23:17,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:23:17,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:23:17,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:23:17,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:23:17,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:23:17,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:23:17,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:23:17,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:23:17,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:23:17,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:23:17,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:23:17,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:23:17,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:23:17,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:23:17,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:23:17,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:23:17,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:23:17,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:23:17,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:23:17,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:23:17,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:23:17,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:23:17,959 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:23:17,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:23:17,960 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:23:17,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:23:17,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:23:17,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:23:17,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:23:17,962 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:23:17,962 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:23:17,962 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:23:17,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:23:17,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:23:17,963 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:23:17,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:23:17,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:23:17,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:23:17,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:23:17,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:23:17,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:23:17,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:23:17,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:23:17,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:23:17,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:23:17,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:23:17,969 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 -> fb0d163b15d3c265ca05b2b9dcc84c96a983bffe [2020-10-19 18:23:18,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:23:18,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:23:18,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:23:18,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:23:18,322 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:23:18,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-10-19 18:23:18,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14ae93f36/cf37a3836bff49eaae32857b413d22f8/FLAGd61e97310 [2020-10-19 18:23:18,934 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:23:18,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-10-19 18:23:18,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14ae93f36/cf37a3836bff49eaae32857b413d22f8/FLAGd61e97310 [2020-10-19 18:23:19,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14ae93f36/cf37a3836bff49eaae32857b413d22f8 [2020-10-19 18:23:19,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:23:19,304 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:23:19,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:19,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:23:19,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:23:19,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5caaa82e 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 18:23:19,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:19" (1/1) ... [2020-10-19 18:23:19,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:23:19,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:23:19,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:19,752 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:23:19,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:19,843 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:23:19,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:19 WrapperNode [2020-10-19 18:23:19,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:19,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:23:19,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:23:19,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:23:19,856 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 18:23:19,856 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 18:23:19,868 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 18:23:19,869 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 18:23:19,884 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 18:23:19,891 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 18:23:19,895 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 18:23:19,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:23:19,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:23:19,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:23:19,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:23:19,902 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 18:23:19,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:23:19,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:23:19,961 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:23:19,961 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-19 18:23:19,962 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-19 18:23:19,962 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-10-19 18:23:19,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:23:19,962 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-19 18:23:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-19 18:23:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-19 18:23:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-19 18:23:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-19 18:23:19,964 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-10-19 18:23:19,964 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-19 18:23:19,964 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:23:19,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:23:19,965 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:23:19,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:23:19,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-19 18:23:19,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:23:19,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-19 18:23:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-10-19 18:23:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-19 18:23:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-19 18:23:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-19 18:23:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-10-19 18:23:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-19 18:23:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-19 18:23:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-19 18:23:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-19 18:23:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:23:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-19 18:23:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:23:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:23:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:23:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:23:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:23:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:23:20,268 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:23:20,365 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2020-10-19 18:23:20,366 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2020-10-19 18:23:20,367 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:23:20,407 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2020-10-19 18:23:20,408 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2020-10-19 18:23:20,459 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:23:20,481 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-19 18:23:20,481 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-19 18:23:20,494 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 18:23:20,605 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-10-19 18:23:20,605 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-10-19 18:23:20,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:23:20,624 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-19 18:23:20,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:20 BoogieIcfgContainer [2020-10-19 18:23:20,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:23:20,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:23:20,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:23:20,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:23:20,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:23:19" (1/3) ... [2020-10-19 18:23:20,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203e14c 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 18:23:20,636 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 18:23:20,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203e14c 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 18:23:20,637 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 18:23:20,638 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.c [2020-10-19 18:23:20,647 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:23:20,655 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-19 18:23:20,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-19 18:23:20,688 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:23:20,688 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:23:20,688 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:23:20,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:23:20,689 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:23:20,689 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:23:20,689 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:23:20,689 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:23:20,709 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-10-19 18:23:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:23:20,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:20,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:20,719 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:20,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:20,725 INFO L82 PathProgramCache]: Analyzing trace with hash -805088101, now seen corresponding path program 1 times [2020-10-19 18:23:20,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:20,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314501006] [2020-10-19 18:23:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:21,085 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-19 18:23:21,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:21,176 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 18:23:21,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314501006] [2020-10-19 18:23:21,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:21,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:23:21,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160454607] [2020-10-19 18:23:21,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:21,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:21,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:21,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:21,205 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 4 states. [2020-10-19 18:23:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:21,787 INFO L93 Difference]: Finished difference Result 167 states and 237 transitions. [2020-10-19 18:23:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:23:21,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-19 18:23:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:21,804 INFO L225 Difference]: With dead ends: 167 [2020-10-19 18:23:21,805 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 18:23:21,807 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 18:23:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 18:23:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-19 18:23:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 18:23:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 193 transitions. [2020-10-19 18:23:21,869 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 193 transitions. Word has length 15 [2020-10-19 18:23:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:21,870 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 193 transitions. [2020-10-19 18:23:21,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 193 transitions. [2020-10-19 18:23:21,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:23:21,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:21,872 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 18:23:21,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:23:21,873 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:21,874 INFO L82 PathProgramCache]: Analyzing trace with hash 663407879, now seen corresponding path program 1 times [2020-10-19 18:23:21,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:21,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133704358] [2020-10-19 18:23:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:22,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:22,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:22,111 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 18:23:22,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133704358] [2020-10-19 18:23:22,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:22,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:23:22,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538707275] [2020-10-19 18:23:22,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:23:22,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:22,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:23:22,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:22,117 INFO L87 Difference]: Start difference. First operand 141 states and 193 transitions. Second operand 5 states. [2020-10-19 18:23:22,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:22,729 INFO L93 Difference]: Finished difference Result 158 states and 215 transitions. [2020-10-19 18:23:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:22,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-19 18:23:22,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:22,733 INFO L225 Difference]: With dead ends: 158 [2020-10-19 18:23:22,733 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 18:23:22,734 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 18:23:22,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 18:23:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-19 18:23:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 18:23:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 191 transitions. [2020-10-19 18:23:22,750 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 191 transitions. Word has length 21 [2020-10-19 18:23:22,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:22,751 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 191 transitions. [2020-10-19 18:23:22,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:23:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 191 transitions. [2020-10-19 18:23:22,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:22,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:22,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:22,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:23:22,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:22,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:22,755 INFO L82 PathProgramCache]: Analyzing trace with hash -529077197, now seen corresponding path program 1 times [2020-10-19 18:23:22,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:22,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083094290] [2020-10-19 18:23:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:22,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,069 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 18:23:23,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083094290] [2020-10-19 18:23:23,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:23,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:23:23,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507170543] [2020-10-19 18:23:23,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:23:23,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:23,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:23:23,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:23:23,072 INFO L87 Difference]: Start difference. First operand 141 states and 191 transitions. Second operand 6 states. [2020-10-19 18:23:23,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:23,745 INFO L93 Difference]: Finished difference Result 222 states and 294 transitions. [2020-10-19 18:23:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:23:23,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-19 18:23:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:23,749 INFO L225 Difference]: With dead ends: 222 [2020-10-19 18:23:23,749 INFO L226 Difference]: Without dead ends: 221 [2020-10-19 18:23:23,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:23:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-19 18:23:23,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 196. [2020-10-19 18:23:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-19 18:23:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2020-10-19 18:23:23,793 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 27 [2020-10-19 18:23:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:23,793 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2020-10-19 18:23:23,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:23:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2020-10-19 18:23:23,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:23:23,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:23,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:23,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:23:23,797 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:23,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:23,798 INFO L82 PathProgramCache]: Analyzing trace with hash 778367763, now seen corresponding path program 1 times [2020-10-19 18:23:23,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:23,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602679552] [2020-10-19 18:23:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,056 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 18:23:24,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602679552] [2020-10-19 18:23:24,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:24,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:23:24,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575218300] [2020-10-19 18:23:24,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:23:24,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:24,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:23:24,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:23:24,062 INFO L87 Difference]: Start difference. First operand 196 states and 260 transitions. Second operand 6 states. [2020-10-19 18:23:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:24,709 INFO L93 Difference]: Finished difference Result 256 states and 337 transitions. [2020-10-19 18:23:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:23:24,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-19 18:23:24,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:24,712 INFO L225 Difference]: With dead ends: 256 [2020-10-19 18:23:24,712 INFO L226 Difference]: Without dead ends: 256 [2020-10-19 18:23:24,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:23:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-19 18:23:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 218. [2020-10-19 18:23:24,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-19 18:23:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 290 transitions. [2020-10-19 18:23:24,729 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 290 transitions. Word has length 28 [2020-10-19 18:23:24,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:24,729 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 290 transitions. [2020-10-19 18:23:24,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:23:24,730 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 290 transitions. [2020-10-19 18:23:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:23:24,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:24,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:24,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:23:24,733 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:24,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:24,733 INFO L82 PathProgramCache]: Analyzing trace with hash 724282888, now seen corresponding path program 1 times [2020-10-19 18:23:24,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:24,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633712747] [2020-10-19 18:23:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:24,988 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 18:23:24,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633712747] [2020-10-19 18:23:24,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:24,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:23:24,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838040056] [2020-10-19 18:23:24,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:23:24,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:24,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:23:25,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:23:25,001 INFO L87 Difference]: Start difference. First operand 218 states and 290 transitions. Second operand 7 states. [2020-10-19 18:23:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:25,968 INFO L93 Difference]: Finished difference Result 218 states and 289 transitions. [2020-10-19 18:23:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:23:25,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-19 18:23:25,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:25,975 INFO L225 Difference]: With dead ends: 218 [2020-10-19 18:23:25,975 INFO L226 Difference]: Without dead ends: 218 [2020-10-19 18:23:25,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:23:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-19 18:23:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-19 18:23:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-19 18:23:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 289 transitions. [2020-10-19 18:23:25,988 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 289 transitions. Word has length 38 [2020-10-19 18:23:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:25,989 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 289 transitions. [2020-10-19 18:23:25,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:23:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 289 transitions. [2020-10-19 18:23:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 18:23:25,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:25,992 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 18:23:25,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:23:25,993 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:25,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:25,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1120438894, now seen corresponding path program 1 times [2020-10-19 18:23:25,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:25,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008034418] [2020-10-19 18:23:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-19 18:23:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:26,216 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 18:23:26,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008034418] [2020-10-19 18:23:26,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:26,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:23:26,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618821494] [2020-10-19 18:23:26,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:23:26,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:26,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:23:26,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:23:26,220 INFO L87 Difference]: Start difference. First operand 218 states and 289 transitions. Second operand 9 states. [2020-10-19 18:23:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:27,186 INFO L93 Difference]: Finished difference Result 210 states and 273 transitions. [2020-10-19 18:23:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:23:27,190 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-19 18:23:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:27,192 INFO L225 Difference]: With dead ends: 210 [2020-10-19 18:23:27,192 INFO L226 Difference]: Without dead ends: 210 [2020-10-19 18:23:27,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:23:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-19 18:23:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 191. [2020-10-19 18:23:27,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-19 18:23:27,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 251 transitions. [2020-10-19 18:23:27,208 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 251 transitions. Word has length 46 [2020-10-19 18:23:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:27,208 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 251 transitions. [2020-10-19 18:23:27,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:23:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 251 transitions. [2020-10-19 18:23:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-19 18:23:27,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:27,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:27,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:23:27,212 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:27,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:27,213 INFO L82 PathProgramCache]: Analyzing trace with hash -202571997, now seen corresponding path program 1 times [2020-10-19 18:23:27,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:27,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543640662] [2020-10-19 18:23:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-19 18:23:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-19 18:23:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:27,419 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 18:23:27,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543640662] [2020-10-19 18:23:27,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:27,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:23:27,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391856496] [2020-10-19 18:23:27,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:23:27,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:27,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:23:27,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:23:27,422 INFO L87 Difference]: Start difference. First operand 191 states and 251 transitions. Second operand 8 states. [2020-10-19 18:23:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:28,222 INFO L93 Difference]: Finished difference Result 198 states and 258 transitions. [2020-10-19 18:23:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:23:28,223 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-19 18:23:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:28,226 INFO L225 Difference]: With dead ends: 198 [2020-10-19 18:23:28,226 INFO L226 Difference]: Without dead ends: 198 [2020-10-19 18:23:28,227 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 18:23:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-19 18:23:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 189. [2020-10-19 18:23:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-19 18:23:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 247 transitions. [2020-10-19 18:23:28,235 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 247 transitions. Word has length 52 [2020-10-19 18:23:28,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:28,236 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 247 transitions. [2020-10-19 18:23:28,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:23:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 247 transitions. [2020-10-19 18:23:28,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 18:23:28,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:28,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:28,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:23:28,239 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:28,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:28,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1084449432, now seen corresponding path program 1 times [2020-10-19 18:23:28,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:28,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618055023] [2020-10-19 18:23:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-19 18:23:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:28,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618055023] [2020-10-19 18:23:28,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:28,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:28,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964814753] [2020-10-19 18:23:28,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:28,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:28,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:28,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:28,535 INFO L87 Difference]: Start difference. First operand 189 states and 247 transitions. Second operand 12 states. [2020-10-19 18:23:29,131 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-19 18:23:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:29,714 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2020-10-19 18:23:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:23:29,714 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-19 18:23:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:29,716 INFO L225 Difference]: With dead ends: 212 [2020-10-19 18:23:29,716 INFO L226 Difference]: Without dead ends: 212 [2020-10-19 18:23:29,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:23:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-19 18:23:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 189. [2020-10-19 18:23:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-19 18:23:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 245 transitions. [2020-10-19 18:23:29,733 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 245 transitions. Word has length 51 [2020-10-19 18:23:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:29,736 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 245 transitions. [2020-10-19 18:23:29,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 245 transitions. [2020-10-19 18:23:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-19 18:23:29,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:29,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:29,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:23:29,739 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:29,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1181020867, now seen corresponding path program 1 times [2020-10-19 18:23:29,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:29,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988313987] [2020-10-19 18:23:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-19 18:23:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:29,951 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 18:23:29,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988313987] [2020-10-19 18:23:29,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:29,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:23:29,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384791992] [2020-10-19 18:23:29,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:23:29,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:29,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:23:29,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:23:29,954 INFO L87 Difference]: Start difference. First operand 189 states and 245 transitions. Second operand 8 states. [2020-10-19 18:23:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:30,349 INFO L93 Difference]: Finished difference Result 214 states and 277 transitions. [2020-10-19 18:23:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:23:30,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-19 18:23:30,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:30,353 INFO L225 Difference]: With dead ends: 214 [2020-10-19 18:23:30,353 INFO L226 Difference]: Without dead ends: 214 [2020-10-19 18:23:30,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:23:30,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-19 18:23:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 195. [2020-10-19 18:23:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-19 18:23:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 253 transitions. [2020-10-19 18:23:30,363 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 253 transitions. Word has length 53 [2020-10-19 18:23:30,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:30,363 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 253 transitions. [2020-10-19 18:23:30,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:23:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 253 transitions. [2020-10-19 18:23:30,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-19 18:23:30,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:30,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:30,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:23:30,366 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1425002687, now seen corresponding path program 1 times [2020-10-19 18:23:30,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:30,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332216337] [2020-10-19 18:23:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-19 18:23:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:30,682 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 18:23:30,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332216337] [2020-10-19 18:23:30,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:30,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:30,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859983571] [2020-10-19 18:23:30,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:30,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:30,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:30,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:30,686 INFO L87 Difference]: Start difference. First operand 195 states and 253 transitions. Second operand 12 states. [2020-10-19 18:23:31,059 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-10-19 18:23:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:31,827 INFO L93 Difference]: Finished difference Result 221 states and 282 transitions. [2020-10-19 18:23:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:23:31,828 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-19 18:23:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:31,830 INFO L225 Difference]: With dead ends: 221 [2020-10-19 18:23:31,830 INFO L226 Difference]: Without dead ends: 221 [2020-10-19 18:23:31,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-19 18:23:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-19 18:23:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 200. [2020-10-19 18:23:31,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-19 18:23:31,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 259 transitions. [2020-10-19 18:23:31,839 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 259 transitions. Word has length 53 [2020-10-19 18:23:31,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:31,840 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 259 transitions. [2020-10-19 18:23:31,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:31,840 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 259 transitions. [2020-10-19 18:23:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-19 18:23:31,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:31,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:31,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:23:31,842 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:31,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:31,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1677512253, now seen corresponding path program 1 times [2020-10-19 18:23:31,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:31,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098374609] [2020-10-19 18:23:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:31,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-19 18:23:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,064 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 18:23:32,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098374609] [2020-10-19 18:23:32,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:32,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:23:32,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210764240] [2020-10-19 18:23:32,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:23:32,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:32,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:23:32,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:23:32,067 INFO L87 Difference]: Start difference. First operand 200 states and 259 transitions. Second operand 10 states. [2020-10-19 18:23:32,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:32,529 INFO L93 Difference]: Finished difference Result 201 states and 257 transitions. [2020-10-19 18:23:32,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:23:32,530 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-19 18:23:32,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:32,531 INFO L225 Difference]: With dead ends: 201 [2020-10-19 18:23:32,532 INFO L226 Difference]: Without dead ends: 95 [2020-10-19 18:23:32,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:32,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-19 18:23:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-19 18:23:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:23:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-10-19 18:23:32,536 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 53 [2020-10-19 18:23:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:32,537 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-10-19 18:23:32,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:23:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-10-19 18:23:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-19 18:23:32,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:32,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:32,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:23:32,539 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:32,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:32,539 INFO L82 PathProgramCache]: Analyzing trace with hash 624658576, now seen corresponding path program 1 times [2020-10-19 18:23:32,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:32,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334190139] [2020-10-19 18:23:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-19 18:23:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:32,808 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 18:23:32,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334190139] [2020-10-19 18:23:32,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:32,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:32,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825931619] [2020-10-19 18:23:32,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:32,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:32,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:32,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:32,812 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 12 states. [2020-10-19 18:23:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:33,562 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-10-19 18:23:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:23:33,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-19 18:23:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:33,564 INFO L225 Difference]: With dead ends: 95 [2020-10-19 18:23:33,565 INFO L226 Difference]: Without dead ends: 95 [2020-10-19 18:23:33,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:23:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-19 18:23:33,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-19 18:23:33,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:23:33,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-10-19 18:23:33,569 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 60 [2020-10-19 18:23:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:33,571 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-10-19 18:23:33,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-10-19 18:23:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 18:23:33,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:33,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:33,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:23:33,573 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:33,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2075251738, now seen corresponding path program 1 times [2020-10-19 18:23:33,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:33,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548605722] [2020-10-19 18:23:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:33,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:33,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:33,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:33,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-19 18:23:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:33,854 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 18:23:33,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548605722] [2020-10-19 18:23:33,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:33,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:33,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049541434] [2020-10-19 18:23:33,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:33,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:33,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:33,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:33,857 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 12 states. [2020-10-19 18:23:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:34,152 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2020-10-19 18:23:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:23:34,152 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-19 18:23:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:34,154 INFO L225 Difference]: With dead ends: 104 [2020-10-19 18:23:34,154 INFO L226 Difference]: Without dead ends: 94 [2020-10-19 18:23:34,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:23:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-19 18:23:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-19 18:23:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-19 18:23:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-10-19 18:23:34,158 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 62 [2020-10-19 18:23:34,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:34,159 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-10-19 18:23:34,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-10-19 18:23:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-19 18:23:34,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:34,160 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 18:23:34,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 18:23:34,161 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:34,161 INFO L82 PathProgramCache]: Analyzing trace with hash -775467898, now seen corresponding path program 1 times [2020-10-19 18:23:34,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:34,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440182639] [2020-10-19 18:23:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-19 18:23:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,397 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 18:23:34,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440182639] [2020-10-19 18:23:34,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:34,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:34,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088896784] [2020-10-19 18:23:34,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:34,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:34,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:34,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:34,400 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 12 states. [2020-10-19 18:23:34,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:34,710 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2020-10-19 18:23:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:23:34,710 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-19 18:23:34,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:34,712 INFO L225 Difference]: With dead ends: 90 [2020-10-19 18:23:34,712 INFO L226 Difference]: Without dead ends: 90 [2020-10-19 18:23:34,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:23:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-19 18:23:34,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-19 18:23:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-19 18:23:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2020-10-19 18:23:34,716 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 63 [2020-10-19 18:23:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:34,716 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2020-10-19 18:23:34,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:34,717 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2020-10-19 18:23:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-19 18:23:34,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:34,718 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 18:23:34,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:23:34,718 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:34,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1381211479, now seen corresponding path program 1 times [2020-10-19 18:23:34,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:34,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492261563] [2020-10-19 18:23:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-19 18:23:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:34,954 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 18:23:34,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492261563] [2020-10-19 18:23:34,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:34,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:23:34,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624442982] [2020-10-19 18:23:34,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:23:34,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:34,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:23:34,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:23:34,958 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 9 states. [2020-10-19 18:23:35,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:35,250 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-10-19 18:23:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:23:35,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-19 18:23:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:35,252 INFO L225 Difference]: With dead ends: 104 [2020-10-19 18:23:35,252 INFO L226 Difference]: Without dead ends: 102 [2020-10-19 18:23:35,253 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 18:23:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-19 18:23:35,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2020-10-19 18:23:35,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-19 18:23:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-10-19 18:23:35,267 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 63 [2020-10-19 18:23:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:35,268 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-10-19 18:23:35,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:23:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-10-19 18:23:35,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-19 18:23:35,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:35,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:35,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:23:35,272 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:35,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:35,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1611348300, now seen corresponding path program 1 times [2020-10-19 18:23:35,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:35,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270253793] [2020-10-19 18:23:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-19 18:23:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:35,577 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 18:23:35,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270253793] [2020-10-19 18:23:35,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:35,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:23:35,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862068580] [2020-10-19 18:23:35,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:23:35,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:35,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:23:35,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:23:35,583 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 9 states. [2020-10-19 18:23:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:36,038 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-19 18:23:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:23:36,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-19 18:23:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:36,040 INFO L225 Difference]: With dead ends: 168 [2020-10-19 18:23:36,040 INFO L226 Difference]: Without dead ends: 168 [2020-10-19 18:23:36,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:23:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-19 18:23:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2020-10-19 18:23:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-19 18:23:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-10-19 18:23:36,049 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 64 [2020-10-19 18:23:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:36,049 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-10-19 18:23:36,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:23:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-10-19 18:23:36,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-19 18:23:36,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:36,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:36,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:23:36,053 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:36,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:36,054 INFO L82 PathProgramCache]: Analyzing trace with hash 802001674, now seen corresponding path program 1 times [2020-10-19 18:23:36,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:36,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136142239] [2020-10-19 18:23:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-19 18:23:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,423 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 18:23:36,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136142239] [2020-10-19 18:23:36,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:36,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:23:36,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115057012] [2020-10-19 18:23:36,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:23:36,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:36,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:23:36,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:23:36,427 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 12 states. [2020-10-19 18:23:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:36,726 INFO L93 Difference]: Finished difference Result 141 states and 148 transitions. [2020-10-19 18:23:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:23:36,727 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-19 18:23:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:36,728 INFO L225 Difference]: With dead ends: 141 [2020-10-19 18:23:36,728 INFO L226 Difference]: Without dead ends: 141 [2020-10-19 18:23:36,729 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 18:23:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-19 18:23:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-10-19 18:23:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 18:23:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 148 transitions. [2020-10-19 18:23:36,736 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 148 transitions. Word has length 64 [2020-10-19 18:23:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:36,737 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 148 transitions. [2020-10-19 18:23:36,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:23:36,737 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 148 transitions. [2020-10-19 18:23:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-19 18:23:36,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:36,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:36,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:23:36,740 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:36,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:36,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1090355466, now seen corresponding path program 1 times [2020-10-19 18:23:36,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:36,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66146407] [2020-10-19 18:23:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-19 18:23:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:36,953 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 18:23:36,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66146407] [2020-10-19 18:23:36,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:36,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:23:36,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344264448] [2020-10-19 18:23:36,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:23:36,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:36,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:23:36,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:23:36,961 INFO L87 Difference]: Start difference. First operand 141 states and 148 transitions. Second operand 9 states. [2020-10-19 18:23:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:37,171 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2020-10-19 18:23:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:23:37,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-19 18:23:37,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:37,172 INFO L225 Difference]: With dead ends: 136 [2020-10-19 18:23:37,172 INFO L226 Difference]: Without dead ends: 134 [2020-10-19 18:23:37,173 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 18:23:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-19 18:23:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-19 18:23:37,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-19 18:23:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-19 18:23:37,180 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 64 [2020-10-19 18:23:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:37,181 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-19 18:23:37,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:23:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-19 18:23:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-19 18:23:37,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:37,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:37,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:23:37,183 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:37,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:37,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1231893397, now seen corresponding path program 1 times [2020-10-19 18:23:37,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:37,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029844947] [2020-10-19 18:23:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:23:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-19 18:23:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 18:23:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:23:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:23:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-19 18:23:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:37,424 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 18:23:37,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029844947] [2020-10-19 18:23:37,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:37,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:23:37,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932551309] [2020-10-19 18:23:37,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:23:37,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:37,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:23:37,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:23:37,428 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 11 states. [2020-10-19 18:23:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:37,623 INFO L93 Difference]: Finished difference Result 104 states and 103 transitions. [2020-10-19 18:23:37,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:23:37,623 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2020-10-19 18:23:37,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:37,624 INFO L225 Difference]: With dead ends: 104 [2020-10-19 18:23:37,624 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:23:37,625 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 18:23:37,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:23:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:23:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:23:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:23:37,626 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2020-10-19 18:23:37,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:37,626 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:23:37,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:23:37,626 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:23:37,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:23:37,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 18:23:37,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:23:37 BoogieIcfgContainer [2020-10-19 18:23:37,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:23:37,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:23:37,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:23:37,632 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:23:37,633 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 18:23:37,637 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:23:37,646 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-19 18:23:37,647 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2020-10-19 18:23:37,647 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Complete [2020-10-19 18:23:37,647 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2020-10-19 18:23:37,647 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2020-10-19 18:23:37,647 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2020-10-19 18:23:37,647 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 18:23:37,648 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2020-10-19 18:23:37,648 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2020-10-19 18:23:37,648 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 18:23:37,648 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2020-10-19 18:23:37,648 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2020-10-19 18:23:37,649 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_PnP [2020-10-19 18:23:37,678 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2020-10-19 18:23:37,680 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-10-19 18:23:37,680 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:23:37,681 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:23:37,807 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:23:37,808 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:23:37,809 INFO L168 Benchmark]: Toolchain (without parser) took 18510.84 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 485.0 MB). Free memory was 954.6 MB in the beginning and 1.4 GB in the end (delta: -399.7 MB). Peak memory consumption was 85.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:37,810 INFO L168 Benchmark]: CDTParser took 0.32 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 18:23:37,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:37,811 INFO L168 Benchmark]: Boogie Preprocessor took 55.19 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:37,811 INFO L168 Benchmark]: RCFGBuilder took 729.38 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: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:37,812 INFO L168 Benchmark]: TraceAbstraction took 17000.35 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 354.9 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -305.2 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:37,812 INFO L168 Benchmark]: Witness Printer took 176.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:37,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 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 539.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 55.19 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 729.38 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: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17000.35 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 354.9 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -305.2 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. * Witness Printer took 176.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 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: 288]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 156 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.9s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2435 SDtfs, 3324 SDslu, 2752 SDs, 0 SdLazy, 5874 SolverSat, 919 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 215 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 952 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 933 ConstructedInterpolants, 0 QuantifiedInterpolants, 247665 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...