./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 0.1.25-9a8b2e8 [2020-10-20 06:16:04,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:16:04,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:16:04,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:16:04,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:16:04,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:16:04,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:16:04,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:16:04,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:16:04,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:16:04,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:16:04,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:16:04,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:16:04,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:16:04,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:16:04,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:16:04,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:16:04,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:16:04,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:16:04,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:16:04,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:16:04,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:16:04,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:16:04,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:16:04,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:16:04,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:16:04,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:16:04,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:16:04,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:16:04,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:16:04,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:16:04,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:16:04,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:16:04,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:16:04,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:16:04,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:16:04,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:16:04,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:16:04,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:16:04,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:16:04,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:16:04,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:16:04,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:16:04,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:16:04,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:16:04,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:16:04,817 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:16:04,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:16:04,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:16:04,818 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:16:04,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:16:04,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:16:04,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:16:04,820 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:16:04,820 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:16:04,821 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:16:04,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:16:04,821 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:16:04,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:16:04,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:16:04,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:16:04,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:16:04,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:16:04,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:16:04,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:16:04,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:16:04,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:16:04,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:16:04,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:16:04,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:16:04,824 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 [2020-10-20 06:16:05,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:16:05,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:16:05,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:16:05,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:16:05,064 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:16:05,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-10-20 06:16:05,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb46949ce/76d8f4006b5847f994db7a76b2f6e13e/FLAG4d9d57c4d [2020-10-20 06:16:05,661 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:16:05,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-10-20 06:16:05,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb46949ce/76d8f4006b5847f994db7a76b2f6e13e/FLAG4d9d57c4d [2020-10-20 06:16:06,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb46949ce/76d8f4006b5847f994db7a76b2f6e13e [2020-10-20 06:16:06,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:16:06,012 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:16:06,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:06,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:16:06,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:16:06,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:06" (1/1) ... [2020-10-20 06:16:06,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0d433a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06, skipping insertion in model container [2020-10-20 06:16:06,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:06" (1/1) ... [2020-10-20 06:16:06,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:16:06,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:16:06,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:06,421 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:16:06,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:06,493 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:16:06,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06 WrapperNode [2020-10-20 06:16:06,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:06,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:16:06,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:16:06,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:16:06,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06" (1/1) ... [2020-10-20 06:16:06,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06" (1/1) ... [2020-10-20 06:16:06,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06" (1/1) ... [2020-10-20 06:16:06,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06" (1/1) ... [2020-10-20 06:16:06,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06" (1/1) ... [2020-10-20 06:16:06,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06" (1/1) ... [2020-10-20 06:16:06,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06" (1/1) ... [2020-10-20 06:16:06,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:16:06,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:16:06,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:16:06,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:16:06,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06" (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 [2020-10-20 06:16:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:16:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:16:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:16:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-20 06:16:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-20 06:16:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-10-20 06:16:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:16:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-20 06:16:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-20 06:16:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-20 06:16:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-20 06:16:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-20 06:16:06,637 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-10-20 06:16:06,637 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-20 06:16:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:16:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:16:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:16:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:16:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-20 06:16:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:16:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-20 06:16:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-10-20 06:16:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-20 06:16:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-20 06:16:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-20 06:16:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-10-20 06:16:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-20 06:16:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-20 06:16:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-20 06:16:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-20 06:16:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:16:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-20 06:16:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:16:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:16:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:16:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:16:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:16:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:16:06,894 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:16:07,013 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2020-10-20 06:16:07,013 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2020-10-20 06:16:07,015 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:16:07,063 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2020-10-20 06:16:07,063 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2020-10-20 06:16:07,138 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:16:07,194 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-20 06:16:07,194 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-20 06:16:07,208 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:16:07,367 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-10-20 06:16:07,367 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-10-20 06:16:07,399 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:16:07,400 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-20 06:16:07,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:07 BoogieIcfgContainer [2020-10-20 06:16:07,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:16:07,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:16:07,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:16:07,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:16:07,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:16:06" (1/3) ... [2020-10-20 06:16:07,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2ac8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:07, skipping insertion in model container [2020-10-20 06:16:07,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:06" (2/3) ... [2020-10-20 06:16:07,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2ac8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:07, skipping insertion in model container [2020-10-20 06:16:07,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:07" (3/3) ... [2020-10-20 06:16:07,416 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.c [2020-10-20 06:16:07,428 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:16:07,436 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 06:16:07,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 06:16:07,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:16:07,471 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:16:07,472 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:16:07,472 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:16:07,472 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:16:07,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:16:07,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:16:07,472 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:16:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-10-20 06:16:07,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:16:07,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:07,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:07,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:07,508 INFO L82 PathProgramCache]: Analyzing trace with hash -805088101, now seen corresponding path program 1 times [2020-10-20 06:16:07,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:07,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717588279] [2020-10-20 06:16:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:07,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:07,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717588279] [2020-10-20 06:16:07,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:07,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:16:07,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252239519] [2020-10-20 06:16:07,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:07,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:07,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:07,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:08,003 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 4 states. [2020-10-20 06:16:08,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:08,542 INFO L93 Difference]: Finished difference Result 167 states and 237 transitions. [2020-10-20 06:16:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:16:08,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-20 06:16:08,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:08,566 INFO L225 Difference]: With dead ends: 167 [2020-10-20 06:16:08,567 INFO L226 Difference]: Without dead ends: 158 [2020-10-20 06:16:08,570 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 [2020-10-20 06:16:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-20 06:16:08,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-20 06:16:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-20 06:16:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 193 transitions. [2020-10-20 06:16:08,672 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 193 transitions. Word has length 15 [2020-10-20 06:16:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:08,673 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 193 transitions. [2020-10-20 06:16:08,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 193 transitions. [2020-10-20 06:16:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:16:08,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:08,675 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] [2020-10-20 06:16:08,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:16:08,677 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:08,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:08,677 INFO L82 PathProgramCache]: Analyzing trace with hash 663407879, now seen corresponding path program 1 times [2020-10-20 06:16:08,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:08,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729577289] [2020-10-20 06:16:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:08,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:08,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:08,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729577289] [2020-10-20 06:16:08,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:08,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:16:08,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341559107] [2020-10-20 06:16:08,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:16:08,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:08,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:16:08,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:08,981 INFO L87 Difference]: Start difference. First operand 141 states and 193 transitions. Second operand 5 states. [2020-10-20 06:16:09,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:09,550 INFO L93 Difference]: Finished difference Result 158 states and 215 transitions. [2020-10-20 06:16:09,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:09,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-20 06:16:09,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:09,555 INFO L225 Difference]: With dead ends: 158 [2020-10-20 06:16:09,555 INFO L226 Difference]: Without dead ends: 158 [2020-10-20 06:16:09,561 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 [2020-10-20 06:16:09,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-20 06:16:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-20 06:16:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-20 06:16:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 191 transitions. [2020-10-20 06:16:09,584 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 191 transitions. Word has length 21 [2020-10-20 06:16:09,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:09,586 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 191 transitions. [2020-10-20 06:16:09,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:16:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 191 transitions. [2020-10-20 06:16:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:09,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:09,588 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] [2020-10-20 06:16:09,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:16:09,588 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:09,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:09,589 INFO L82 PathProgramCache]: Analyzing trace with hash -529077197, now seen corresponding path program 1 times [2020-10-20 06:16:09,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:09,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060765573] [2020-10-20 06:16:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:09,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:09,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:09,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060765573] [2020-10-20 06:16:09,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:09,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:16:09,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416024200] [2020-10-20 06:16:09,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:16:09,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:09,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:16:09,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:16:09,873 INFO L87 Difference]: Start difference. First operand 141 states and 191 transitions. Second operand 6 states. [2020-10-20 06:16:10,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:10,543 INFO L93 Difference]: Finished difference Result 222 states and 294 transitions. [2020-10-20 06:16:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:16:10,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-20 06:16:10,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:10,547 INFO L225 Difference]: With dead ends: 222 [2020-10-20 06:16:10,547 INFO L226 Difference]: Without dead ends: 221 [2020-10-20 06:16:10,551 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 [2020-10-20 06:16:10,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-20 06:16:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 196. [2020-10-20 06:16:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-20 06:16:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2020-10-20 06:16:10,574 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 27 [2020-10-20 06:16:10,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:10,575 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2020-10-20 06:16:10,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:16:10,575 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2020-10-20 06:16:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:16:10,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:10,577 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] [2020-10-20 06:16:10,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:16:10,577 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:10,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash 778367763, now seen corresponding path program 1 times [2020-10-20 06:16:10,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:10,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710329200] [2020-10-20 06:16:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:10,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:10,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:10,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710329200] [2020-10-20 06:16:10,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:10,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:16:10,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055153037] [2020-10-20 06:16:10,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:16:10,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:10,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:16:10,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:16:10,794 INFO L87 Difference]: Start difference. First operand 196 states and 260 transitions. Second operand 6 states. [2020-10-20 06:16:11,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:11,472 INFO L93 Difference]: Finished difference Result 256 states and 337 transitions. [2020-10-20 06:16:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:16:11,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-20 06:16:11,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:11,482 INFO L225 Difference]: With dead ends: 256 [2020-10-20 06:16:11,487 INFO L226 Difference]: Without dead ends: 256 [2020-10-20 06:16:11,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:16:11,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-20 06:16:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 218. [2020-10-20 06:16:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-20 06:16:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 290 transitions. [2020-10-20 06:16:11,521 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 290 transitions. Word has length 28 [2020-10-20 06:16:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:11,523 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 290 transitions. [2020-10-20 06:16:11,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:16:11,523 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 290 transitions. [2020-10-20 06:16:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-20 06:16:11,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:11,525 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] [2020-10-20 06:16:11,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:16:11,526 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:11,526 INFO L82 PathProgramCache]: Analyzing trace with hash 724282888, now seen corresponding path program 1 times [2020-10-20 06:16:11,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:11,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390507252] [2020-10-20 06:16:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:11,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:11,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:11,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:11,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390507252] [2020-10-20 06:16:11,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:11,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:16:11,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772713545] [2020-10-20 06:16:11,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:16:11,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:11,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:16:11,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:16:11,806 INFO L87 Difference]: Start difference. First operand 218 states and 290 transitions. Second operand 7 states. [2020-10-20 06:16:12,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:12,702 INFO L93 Difference]: Finished difference Result 218 states and 289 transitions. [2020-10-20 06:16:12,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:16:12,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-20 06:16:12,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:12,708 INFO L225 Difference]: With dead ends: 218 [2020-10-20 06:16:12,708 INFO L226 Difference]: Without dead ends: 218 [2020-10-20 06:16:12,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:16:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-20 06:16:12,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-20 06:16:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-20 06:16:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 289 transitions. [2020-10-20 06:16:12,725 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 289 transitions. Word has length 38 [2020-10-20 06:16:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:12,726 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 289 transitions. [2020-10-20 06:16:12,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:16:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 289 transitions. [2020-10-20 06:16:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-20 06:16:12,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:12,736 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] [2020-10-20 06:16:12,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:16:12,737 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:12,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:12,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1120438894, now seen corresponding path program 1 times [2020-10-20 06:16:12,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:12,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602943391] [2020-10-20 06:16:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:12,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:12,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:16:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:12,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602943391] [2020-10-20 06:16:12,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:12,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:16:12,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934106954] [2020-10-20 06:16:12,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:16:12,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:12,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:16:12,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:16:12,992 INFO L87 Difference]: Start difference. First operand 218 states and 289 transitions. Second operand 9 states. [2020-10-20 06:16:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:14,013 INFO L93 Difference]: Finished difference Result 210 states and 273 transitions. [2020-10-20 06:16:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:16:14,013 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-20 06:16:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:14,016 INFO L225 Difference]: With dead ends: 210 [2020-10-20 06:16:14,016 INFO L226 Difference]: Without dead ends: 210 [2020-10-20 06:16:14,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:16:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-20 06:16:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 191. [2020-10-20 06:16:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-20 06:16:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 251 transitions. [2020-10-20 06:16:14,027 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 251 transitions. Word has length 46 [2020-10-20 06:16:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:14,027 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 251 transitions. [2020-10-20 06:16:14,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:16:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 251 transitions. [2020-10-20 06:16:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-20 06:16:14,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:14,030 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] [2020-10-20 06:16:14,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:16:14,031 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:14,031 INFO L82 PathProgramCache]: Analyzing trace with hash -202571997, now seen corresponding path program 1 times [2020-10-20 06:16:14,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:14,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643259907] [2020-10-20 06:16:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:14,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:14,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:14,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-20 06:16:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:14,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 06:16:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:14,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-20 06:16:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:14,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643259907] [2020-10-20 06:16:14,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:14,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 06:16:14,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433738374] [2020-10-20 06:16:14,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:16:14,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:14,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:16:14,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:16:14,259 INFO L87 Difference]: Start difference. First operand 191 states and 251 transitions. Second operand 8 states. [2020-10-20 06:16:14,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:14,922 INFO L93 Difference]: Finished difference Result 198 states and 258 transitions. [2020-10-20 06:16:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:16:14,923 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-20 06:16:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:14,925 INFO L225 Difference]: With dead ends: 198 [2020-10-20 06:16:14,925 INFO L226 Difference]: Without dead ends: 198 [2020-10-20 06:16:14,926 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 [2020-10-20 06:16:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-20 06:16:14,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 189. [2020-10-20 06:16:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-20 06:16:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 247 transitions. [2020-10-20 06:16:14,941 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 247 transitions. Word has length 52 [2020-10-20 06:16:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:14,942 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 247 transitions. [2020-10-20 06:16:14,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:16:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 247 transitions. [2020-10-20 06:16:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-20 06:16:14,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:14,948 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] [2020-10-20 06:16:14,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:16:14,948 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:14,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:14,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1084449432, now seen corresponding path program 1 times [2020-10-20 06:16:14,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:14,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442256277] [2020-10-20 06:16:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:15,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:15,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 06:16:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:15,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:15,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442256277] [2020-10-20 06:16:15,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:15,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-20 06:16:15,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919768928] [2020-10-20 06:16:15,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:16:15,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:15,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:16:15,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:16:15,295 INFO L87 Difference]: Start difference. First operand 189 states and 247 transitions. Second operand 12 states. [2020-10-20 06:16:15,942 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-20 06:16:16,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:16,550 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2020-10-20 06:16:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:16:16,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-20 06:16:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:16,553 INFO L225 Difference]: With dead ends: 212 [2020-10-20 06:16:16,553 INFO L226 Difference]: Without dead ends: 212 [2020-10-20 06:16:16,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-20 06:16:16,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-20 06:16:16,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 189. [2020-10-20 06:16:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-20 06:16:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 245 transitions. [2020-10-20 06:16:16,562 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 245 transitions. Word has length 51 [2020-10-20 06:16:16,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:16,562 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 245 transitions. [2020-10-20 06:16:16,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:16:16,562 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 245 transitions. [2020-10-20 06:16:16,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-20 06:16:16,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:16,564 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] [2020-10-20 06:16:16,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:16:16,564 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:16,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:16,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1181020867, now seen corresponding path program 1 times [2020-10-20 06:16:16,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:16,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769511265] [2020-10-20 06:16:16,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:16,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 06:16:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:16,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769511265] [2020-10-20 06:16:16,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:16,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 06:16:16,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61534168] [2020-10-20 06:16:16,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:16:16,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:16,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:16:16,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:16:16,802 INFO L87 Difference]: Start difference. First operand 189 states and 245 transitions. Second operand 8 states. [2020-10-20 06:16:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:17,197 INFO L93 Difference]: Finished difference Result 214 states and 277 transitions. [2020-10-20 06:16:17,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:16:17,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-20 06:16:17,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:17,202 INFO L225 Difference]: With dead ends: 214 [2020-10-20 06:16:17,202 INFO L226 Difference]: Without dead ends: 214 [2020-10-20 06:16:17,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:16:17,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-20 06:16:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 195. [2020-10-20 06:16:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-20 06:16:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 253 transitions. [2020-10-20 06:16:17,219 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 253 transitions. Word has length 53 [2020-10-20 06:16:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:17,219 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 253 transitions. [2020-10-20 06:16:17,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:16:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 253 transitions. [2020-10-20 06:16:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-20 06:16:17,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:17,222 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] [2020-10-20 06:16:17,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:16:17,222 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:17,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1425002687, now seen corresponding path program 1 times [2020-10-20 06:16:17,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:17,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487226035] [2020-10-20 06:16:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:17,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:17,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:17,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:17,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 06:16:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:17,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487226035] [2020-10-20 06:16:17,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:17,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-20 06:16:17,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844019063] [2020-10-20 06:16:17,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:16:17,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:17,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:16:17,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:16:17,602 INFO L87 Difference]: Start difference. First operand 195 states and 253 transitions. Second operand 12 states. [2020-10-20 06:16:17,912 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-10-20 06:16:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:18,694 INFO L93 Difference]: Finished difference Result 221 states and 282 transitions. [2020-10-20 06:16:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:16:18,695 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-20 06:16:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:18,697 INFO L225 Difference]: With dead ends: 221 [2020-10-20 06:16:18,697 INFO L226 Difference]: Without dead ends: 221 [2020-10-20 06:16:18,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:16:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-20 06:16:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 200. [2020-10-20 06:16:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-20 06:16:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 259 transitions. [2020-10-20 06:16:18,707 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 259 transitions. Word has length 53 [2020-10-20 06:16:18,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:18,707 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 259 transitions. [2020-10-20 06:16:18,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:16:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 259 transitions. [2020-10-20 06:16:18,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-20 06:16:18,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:18,709 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] [2020-10-20 06:16:18,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 06:16:18,709 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:18,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1677512253, now seen corresponding path program 1 times [2020-10-20 06:16:18,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:18,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909853232] [2020-10-20 06:16:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:18,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:18,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:18,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 06:16:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:18,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:18,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909853232] [2020-10-20 06:16:18,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:18,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 06:16:18,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740566223] [2020-10-20 06:16:18,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:16:18,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:18,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:16:18,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:16:18,935 INFO L87 Difference]: Start difference. First operand 200 states and 259 transitions. Second operand 10 states. [2020-10-20 06:16:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:19,374 INFO L93 Difference]: Finished difference Result 201 states and 257 transitions. [2020-10-20 06:16:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:16:19,374 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-20 06:16:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:19,375 INFO L225 Difference]: With dead ends: 201 [2020-10-20 06:16:19,375 INFO L226 Difference]: Without dead ends: 95 [2020-10-20 06:16:19,376 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 [2020-10-20 06:16:19,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-20 06:16:19,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-20 06:16:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-20 06:16:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-10-20 06:16:19,380 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 53 [2020-10-20 06:16:19,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:19,380 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-10-20 06:16:19,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:16:19,380 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-10-20 06:16:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-20 06:16:19,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:19,381 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] [2020-10-20 06:16:19,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 06:16:19,382 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash 624658576, now seen corresponding path program 1 times [2020-10-20 06:16:19,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:19,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238284777] [2020-10-20 06:16:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:19,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:19,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:19,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:16:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:19,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 06:16:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:19,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 06:16:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:19,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:19,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238284777] [2020-10-20 06:16:19,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:19,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-20 06:16:19,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31813644] [2020-10-20 06:16:19,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:16:19,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:19,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:16:19,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:16:19,665 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 12 states. [2020-10-20 06:16:20,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:20,221 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-10-20 06:16:20,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:16:20,222 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-20 06:16:20,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:20,223 INFO L225 Difference]: With dead ends: 95 [2020-10-20 06:16:20,224 INFO L226 Difference]: Without dead ends: 95 [2020-10-20 06:16:20,224 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 [2020-10-20 06:16:20,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-20 06:16:20,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-20 06:16:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-20 06:16:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-10-20 06:16:20,228 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 60 [2020-10-20 06:16:20,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:20,229 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-10-20 06:16:20,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:16:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-10-20 06:16:20,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-20 06:16:20,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:20,231 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] [2020-10-20 06:16:20,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 06:16:20,232 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:20,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:20,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2075251738, now seen corresponding path program 1 times [2020-10-20 06:16:20,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:20,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371948423] [2020-10-20 06:16:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:16:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 06:16:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 06:16:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:20,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371948423] [2020-10-20 06:16:20,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:20,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-20 06:16:20,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825357334] [2020-10-20 06:16:20,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:16:20,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:20,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:16:20,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:16:20,484 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 12 states. [2020-10-20 06:16:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:20,758 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2020-10-20 06:16:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:16:20,759 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-20 06:16:20,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:20,760 INFO L225 Difference]: With dead ends: 104 [2020-10-20 06:16:20,760 INFO L226 Difference]: Without dead ends: 94 [2020-10-20 06:16:20,761 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 [2020-10-20 06:16:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-20 06:16:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-20 06:16:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-20 06:16:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-10-20 06:16:20,764 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 62 [2020-10-20 06:16:20,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:20,765 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-10-20 06:16:20,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:16:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-10-20 06:16:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-20 06:16:20,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:20,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:20,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 06:16:20,767 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:20,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:20,768 INFO L82 PathProgramCache]: Analyzing trace with hash -775467898, now seen corresponding path program 1 times [2020-10-20 06:16:20,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:20,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327046697] [2020-10-20 06:16:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:16:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 06:16:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 06:16:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:21,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327046697] [2020-10-20 06:16:21,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:21,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-20 06:16:21,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367136206] [2020-10-20 06:16:21,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:16:21,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:21,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:16:21,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:16:21,050 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 12 states. [2020-10-20 06:16:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:21,375 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2020-10-20 06:16:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:16:21,376 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-20 06:16:21,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:21,377 INFO L225 Difference]: With dead ends: 90 [2020-10-20 06:16:21,377 INFO L226 Difference]: Without dead ends: 90 [2020-10-20 06:16:21,378 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 [2020-10-20 06:16:21,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-20 06:16:21,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-20 06:16:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-20 06:16:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2020-10-20 06:16:21,381 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 63 [2020-10-20 06:16:21,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:21,381 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2020-10-20 06:16:21,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:16:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2020-10-20 06:16:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-20 06:16:21,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:21,383 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] [2020-10-20 06:16:21,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 06:16:21,383 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:21,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:21,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1381211479, now seen corresponding path program 1 times [2020-10-20 06:16:21,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:21,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304786828] [2020-10-20 06:16:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:16:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 06:16:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 06:16:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:21,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304786828] [2020-10-20 06:16:21,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:21,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:16:21,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147147376] [2020-10-20 06:16:21,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:16:21,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:21,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:16:21,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:16:21,621 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 9 states. [2020-10-20 06:16:21,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:21,943 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-10-20 06:16:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:16:21,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-20 06:16:21,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:21,945 INFO L225 Difference]: With dead ends: 104 [2020-10-20 06:16:21,945 INFO L226 Difference]: Without dead ends: 102 [2020-10-20 06:16:21,947 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 [2020-10-20 06:16:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-20 06:16:21,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2020-10-20 06:16:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-20 06:16:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-10-20 06:16:21,953 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 63 [2020-10-20 06:16:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:21,957 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-10-20 06:16:21,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:16:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-10-20 06:16:21,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-20 06:16:21,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:21,959 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] [2020-10-20 06:16:21,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-20 06:16:21,960 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:21,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:21,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1611348300, now seen corresponding path program 1 times [2020-10-20 06:16:21,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:21,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263903525] [2020-10-20 06:16:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:16:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 06:16:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 06:16:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:22,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263903525] [2020-10-20 06:16:22,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:22,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:16:22,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429969171] [2020-10-20 06:16:22,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:16:22,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:22,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:16:22,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:16:22,238 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 9 states. [2020-10-20 06:16:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:22,663 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-20 06:16:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:16:22,663 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-20 06:16:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:22,665 INFO L225 Difference]: With dead ends: 168 [2020-10-20 06:16:22,665 INFO L226 Difference]: Without dead ends: 168 [2020-10-20 06:16:22,666 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 [2020-10-20 06:16:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-20 06:16:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2020-10-20 06:16:22,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-20 06:16:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-10-20 06:16:22,675 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 64 [2020-10-20 06:16:22,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:22,676 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-10-20 06:16:22,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:16:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-10-20 06:16:22,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-20 06:16:22,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:22,678 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] [2020-10-20 06:16:22,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-20 06:16:22,678 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:22,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:22,679 INFO L82 PathProgramCache]: Analyzing trace with hash 802001674, now seen corresponding path program 1 times [2020-10-20 06:16:22,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:22,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062582703] [2020-10-20 06:16:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:22,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:16:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 06:16:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 06:16:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:23,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062582703] [2020-10-20 06:16:23,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:23,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-20 06:16:23,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580738190] [2020-10-20 06:16:23,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:16:23,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:23,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:16:23,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:16:23,085 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 12 states. [2020-10-20 06:16:23,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:23,385 INFO L93 Difference]: Finished difference Result 141 states and 148 transitions. [2020-10-20 06:16:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:16:23,385 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-20 06:16:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:23,387 INFO L225 Difference]: With dead ends: 141 [2020-10-20 06:16:23,387 INFO L226 Difference]: Without dead ends: 141 [2020-10-20 06:16:23,388 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 [2020-10-20 06:16:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-20 06:16:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-10-20 06:16:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-20 06:16:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 148 transitions. [2020-10-20 06:16:23,393 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 148 transitions. Word has length 64 [2020-10-20 06:16:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:23,393 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 148 transitions. [2020-10-20 06:16:23,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:16:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 148 transitions. [2020-10-20 06:16:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-20 06:16:23,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:23,394 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] [2020-10-20 06:16:23,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-20 06:16:23,395 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:23,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:23,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1090355466, now seen corresponding path program 1 times [2020-10-20 06:16:23,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:23,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081949404] [2020-10-20 06:16:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:16:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 06:16:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 06:16:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:23,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:23,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081949404] [2020-10-20 06:16:23,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:23,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:16:23,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087464019] [2020-10-20 06:16:23,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:16:23,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:23,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:16:23,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:16:23,649 INFO L87 Difference]: Start difference. First operand 141 states and 148 transitions. Second operand 9 states. [2020-10-20 06:16:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:23,934 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2020-10-20 06:16:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:16:23,935 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-20 06:16:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:23,936 INFO L225 Difference]: With dead ends: 136 [2020-10-20 06:16:23,936 INFO L226 Difference]: Without dead ends: 134 [2020-10-20 06:16:23,936 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 [2020-10-20 06:16:23,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-20 06:16:23,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-20 06:16:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-20 06:16:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-20 06:16:23,941 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 64 [2020-10-20 06:16:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:23,941 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-20 06:16:23,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:16:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-20 06:16:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-20 06:16:23,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:23,942 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] [2020-10-20 06:16:23,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-20 06:16:23,943 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:23,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:23,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1231893397, now seen corresponding path program 1 times [2020-10-20 06:16:23,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:23,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690998608] [2020-10-20 06:16:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:16:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:24,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:16:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 06:16:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 06:16:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:24,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:16:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:24,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-20 06:16:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:24,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690998608] [2020-10-20 06:16:24,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:24,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-20 06:16:24,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268895045] [2020-10-20 06:16:24,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:16:24,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:24,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:16:24,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:16:24,216 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 11 states. [2020-10-20 06:16:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:24,505 INFO L93 Difference]: Finished difference Result 104 states and 103 transitions. [2020-10-20 06:16:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:16:24,506 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2020-10-20 06:16:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:24,506 INFO L225 Difference]: With dead ends: 104 [2020-10-20 06:16:24,506 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:16:24,507 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 [2020-10-20 06:16:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:16:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:16:24,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:16:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:16:24,508 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2020-10-20 06:16:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:24,508 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:16:24,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:16:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:16:24,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:16:24,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-20 06:16:24,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:16:24 BoogieIcfgContainer [2020-10-20 06:16:24,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:16:24,517 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:16:24,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:16:24,517 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:16:24,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:07" (3/4) ... [2020-10-20 06:16:24,523 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:16:24,533 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-20 06:16:24,533 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2020-10-20 06:16:24,533 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Complete [2020-10-20 06:16:24,533 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2020-10-20 06:16:24,534 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2020-10-20 06:16:24,534 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2020-10-20 06:16:24,534 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 06:16:24,534 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2020-10-20 06:16:24,534 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2020-10-20 06:16:24,534 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 06:16:24,535 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2020-10-20 06:16:24,535 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2020-10-20 06:16:24,535 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_PnP [2020-10-20 06:16:24,547 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2020-10-20 06:16:24,548 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-10-20 06:16:24,549 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:16:24,550 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:16:24,722 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:16:24,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:16:24,725 INFO L168 Benchmark]: Toolchain (without parser) took 18718.12 ms. Allocated memory was 36.7 MB in the beginning and 138.9 MB in the end (delta: 102.2 MB). Free memory was 16.3 MB in the beginning and 55.1 MB in the end (delta: -38.8 MB). Peak memory consumption was 63.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:24,725 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 9.8 MB in the beginning and 9.7 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:16:24,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.89 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 15.5 MB in the beginning and 20.9 MB in the end (delta: -5.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:24,727 INFO L168 Benchmark]: Boogie Preprocessor took 58.33 ms. Allocated memory is still 44.6 MB. Free memory was 20.9 MB in the beginning and 18.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:24,727 INFO L168 Benchmark]: RCFGBuilder took 850.98 ms. Allocated memory was 44.6 MB in the beginning and 48.2 MB in the end (delta: 3.7 MB). Free memory was 18.3 MB in the beginning and 19.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:24,728 INFO L168 Benchmark]: TraceAbstraction took 17110.25 ms. Allocated memory was 48.2 MB in the beginning and 138.9 MB in the end (delta: 90.7 MB). Free memory was 19.0 MB in the beginning and 68.4 MB in the end (delta: -49.4 MB). Peak memory consumption was 41.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:24,728 INFO L168 Benchmark]: Witness Printer took 205.94 ms. Allocated memory is still 138.9 MB. Free memory was 68.4 MB in the beginning and 55.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:24,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 9.8 MB in the beginning and 9.7 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 480.89 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 15.5 MB in the beginning and 20.9 MB in the end (delta: -5.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 58.33 ms. Allocated memory is still 44.6 MB. Free memory was 20.9 MB in the beginning and 18.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 850.98 ms. Allocated memory was 44.6 MB in the beginning and 48.2 MB in the end (delta: 3.7 MB). Free memory was 18.3 MB in the beginning and 19.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 17110.25 ms. Allocated memory was 48.2 MB in the beginning and 138.9 MB in the end (delta: 90.7 MB). Free memory was 19.0 MB in the beginning and 68.4 MB in the end (delta: -49.4 MB). Peak memory consumption was 41.3 MB. Max. memory is 14.3 GB. * Witness Printer took 205.94 ms. Allocated memory is still 138.9 MB. Free memory was 68.4 MB in the beginning and 55.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 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: 17.0s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2435 SDtfs, 3324 SDslu, 2752 SDs, 0 SdLazy, 5874 SolverSat, 919 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 215 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 952 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 933 ConstructedInterpolants, 0 QuantifiedInterpolants, 247665 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...